Past Record of Air Pollution Index (Traditional Chinese Version)

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• ID: hk-epd-airteam-past-record-of-air-pollution-index-tc
• Publisher: Environmental Protection Department · Markdown
• Categories: Environment · Markdown
• Tags: Not stated
• Resources: 174
• Updated: 2025-08-04T17:19:55.676732
• Harvest started: 2026-10-20T22:31:00.105Z
• Licence: Not stated
• Source: Official metadata record

Harvest started is the source harvest start associated with this record, not its precise retrieval time. Updated is an upstream metadata claim.

Description

Hourly Air Pollution Index (API) at different Air Quality Monitoring stations from July 1999 to December 2013 (Traditional Chinese Version)

Resources

These are upstream resource links from metadata. Resource contents and endpoint availability have not been verified here.

Past record of Air Pollution Index (Traditional Chinese) Mar 2003

• Resource ID: 001f7dba-f6a2-4038-8f8f-21fb71ee6201
• Format: CSV
• Language: zh-Hant
• Updated: 2025-08-04T17:09:30.244534
• Original URL: http://www.aqhi.gov.hk/api_history/download/hourly/tc_chi/hr032003c.csv

Hourly Air Pollution Index (API) at different Air Quality Monitoring stations in Mar.2003.

The API is a simple way of describing air pollution levels. In Hong Kong, the API converts air pollution data from several types of pollutants into a value ranging from 0 to 500. Since API has been replaced by AQHI on 30 December 2013, please refer to the [archive of API webpage](http://www.aqhi.gov.hk/en/related-websites/air-pollution-index.html), if you want to have the information of API.

The above external links lead to a collection of CSV files containing past hourly API data from July 1999 to December 2013.

The Air Pollution Index has been replaced by the Air Quality Health Index (AQHI) since 30 December 2013. At present, there are 3 roadside and 12 general stations reporting AQHI. Please refer to the [thematic page of AQHI](http://www.aqhi.gov.hk/en) for more information.

Past record of Air Pollution Index (Traditional Chinese) Sep 2010

• Resource ID: 01219771-5224-44df-a1a9-e3f905e16d1e
• Format: CSV
• Language: zh-Hant
• Updated: 2025-08-04T17:15:36.460992
• Original URL: http://www.aqhi.gov.hk/api_history/download/hourly/tc_chi/hr092010c.csv

Hourly Air Pollution Index (API) at different Air Quality Monitoring stations in Sep.2010.

The API is a simple way of describing air pollution levels. In Hong Kong, the API converts air pollution data from several types of pollutants into a value ranging from 0 to 500. Since API has been replaced by AQHI on 30 December 2013, please refer to the [archive of API webpage](http://www.aqhi.gov.hk/en/related-websites/air-pollution-index.html), if you want to have the information of API.

The above external links lead to a collection of CSV files containing past hourly API data from July 1999 to December 2013.

The Air Pollution Index has been replaced by the Air Quality Health Index (AQHI) since 30 December 2013. At present, there are 3 roadside and 12 general stations reporting AQHI. Please refer to the [thematic page of AQHI](http://www.aqhi.gov.hk/en) for more information.

Past record of Air Pollution Index (Traditional Chinese) Jan 2008

• Resource ID: 01de6e06-04ad-47fc-aaee-8431942fb2f0
• Format: CSV
• Language: zh-Hant
• Updated: 2025-08-04T17:12:48.358963
• Original URL: http://www.aqhi.gov.hk/api_history/download/hourly/tc_chi/hr012008c.csv

Hourly Air Pollution Index (API) at different Air Quality Monitoring stations in Jan.2008.

The API is a simple way of describing air pollution levels. In Hong Kong, the API converts air pollution data from several types of pollutants into a value ranging from 0 to 500. Since API has been replaced by AQHI on 30 December 2013, please refer to the [archive of API webpage](http://www.aqhi.gov.hk/en/related-websites/air-pollution-index.html), if you want to have the information of API.

The above external links lead to a collection of CSV files containing past hourly API data from July 1999 to December 2013.

The Air Pollution Index has been replaced by the Air Quality Health Index (AQHI) since 30 December 2013. At present, there are 3 roadside and 12 general stations reporting AQHI. Please refer to the [thematic page of AQHI](http://www.aqhi.gov.hk/en) for more information.

Past record of Air Pollution Index (Traditional Chinese) May 2013

• Resource ID: 01df263f-ea73-4ba6-8950-be5a207b4b3d
• Format: CSV
• Language: zh-Hant
• Updated: 2025-08-04T17:19:05.380963
• Original URL: http://www.aqhi.gov.hk/api_history/download/hourly/tc_chi/hr052013c.csv

Hourly Air Pollution Index (API) at different Air Quality Monitoring stations in May.2013.

The API is a simple way of describing air pollution levels. In Hong Kong, the API converts air pollution data from several types of pollutants into a value ranging from 0 to 500. Since API has been replaced by AQHI on 30 December 2013, please refer to the [archive of API webpage](http://www.aqhi.gov.hk/en/related-websites/air-pollution-index.html), if you want to have the information of API.

The above external links lead to a collection of CSV files containing past hourly API data from July 1999 to December 2013.

The Air Pollution Index has been replaced by the Air Quality Health Index (AQHI) since 30 December 2013. At present, there are 3 roadside and 12 general stations reporting AQHI. Please refer to the [thematic page of AQHI](http://www.aqhi.gov.hk/en) for more information.

Past record of Air Pollution Index (Traditional Chinese) Apr 2006

• Resource ID: 069b0902-841b-4683-8282-8b24e7767034
• Format: CSV
• Language: zh-Hant
• Updated: 2025-08-04T17:11:21.346983
• Original URL: http://www.aqhi.gov.hk/api_history/download/hourly/tc_chi/hr042006c.csv

Hourly Air Pollution Index (API) at different Air Quality Monitoring stations in Apr.2006.

The API is a simple way of describing air pollution levels. In Hong Kong, the API converts air pollution data from several types of pollutants into a value ranging from 0 to 500. Since API has been replaced by AQHI on 30 December 2013, please refer to the [archive of API webpage](http://www.aqhi.gov.hk/en/related-websites/air-pollution-index.html), if you want to have the information of API.

The above external links lead to a collection of CSV files containing past hourly API data from July 1999 to December 2013.

The Air Pollution Index has been replaced by the Air Quality Health Index (AQHI) since 30 December 2013. At present, there are 3 roadside and 12 general stations reporting AQHI. Please refer to the [thematic page of AQHI](http://www.aqhi.gov.hk/en) for more information.

Past record of Air Pollution Index (Traditional Chinese) Sep 2013

• Resource ID: 06c48564-3b90-46dd-a43f-0da1d20b9727
• Format: CSV
• Language: zh-Hant
• Updated: 2025-08-04T17:19:34.196266
• Original URL: http://www.aqhi.gov.hk/api_history/download/hourly/tc_chi/hr092013c.csv

Hourly Air Pollution Index (API) at different Air Quality Monitoring stations in Sep.2013.

The API is a simple way of describing air pollution levels. In Hong Kong, the API converts air pollution data from several types of pollutants into a value ranging from 0 to 500. Since API has been replaced by AQHI on 30 December 2013, please refer to the [archive of API webpage](http://www.aqhi.gov.hk/en/related-websites/air-pollution-index.html), if you want to have the information of API.

The above external links lead to a collection of CSV files containing past hourly API data from July 1999 to December 2013.

The Air Pollution Index has been replaced by the Air Quality Health Index (AQHI) since 30 December 2013. At present, there are 3 roadside and 12 general stations reporting AQHI. Please refer to the [thematic page of AQHI](http://www.aqhi.gov.hk/en) for more information.

Past record of Air Pollution Index (Traditional Chinese) Mar 2008

• Resource ID: 06feb278-e51b-4409-9779-8401c460515c
• Format: CSV
• Language: zh-Hant
• Updated: 2025-08-04T17:12:57.622609
• Original URL: http://www.aqhi.gov.hk/api_history/download/hourly/tc_chi/hr032008c.csv

Hourly Air Pollution Index (API) at different Air Quality Monitoring stations in Mar.2008.

The API is a simple way of describing air pollution levels. In Hong Kong, the API converts air pollution data from several types of pollutants into a value ranging from 0 to 500. Since API has been replaced by AQHI on 30 December 2013, please refer to the [archive of API webpage](http://www.aqhi.gov.hk/en/related-websites/air-pollution-index.html), if you want to have the information of API.

The above external links lead to a collection of CSV files containing past hourly API data from July 1999 to December 2013.

The Air Pollution Index has been replaced by the Air Quality Health Index (AQHI) since 30 December 2013. At present, there are 3 roadside and 12 general stations reporting AQHI. Please refer to the [thematic page of AQHI](http://www.aqhi.gov.hk/en) for more information.

Past record of Air Pollution Index (Traditional Chinese) Nov 2010

• Resource ID: 071dd074-7d2f-4824-8ab3-6fdeff6c18d9
• Format: CSV
• Language: zh-Hant
• Updated: 2025-08-04T17:15:48.229717
• Original URL: http://www.aqhi.gov.hk/api_history/download/hourly/tc_chi/hr112010c.csv

Hourly Air Pollution Index (API) at different Air Quality Monitoring stations in Nov.2010.

The API is a simple way of describing air pollution levels. In Hong Kong, the API converts air pollution data from several types of pollutants into a value ranging from 0 to 500. Since API has been replaced by AQHI on 30 December 2013, please refer to the [archive of API webpage](http://www.aqhi.gov.hk/en/related-websites/air-pollution-index.html), if you want to have the information of API.

The above external links lead to a collection of CSV files containing past hourly API data from July 1999 to December 2013.

The Air Pollution Index has been replaced by the Air Quality Health Index (AQHI) since 30 December 2013. At present, there are 3 roadside and 12 general stations reporting AQHI. Please refer to the [thematic page of AQHI](http://www.aqhi.gov.hk/en) for more information.

Past record of Air Pollution Index (Traditional Chinese) Sep 1999

• Resource ID: 075e4448-da9d-43ed-895d-8ded3d53c713
• Format: CSV
• Language: zh-Hant
• Updated: 2025-08-04T17:08:23.565461
• Original URL: http://www.aqhi.gov.hk/api_history/download/hourly/tc_chi/hr091999c.csv

Hourly Air Pollution Index (API) at different Air Quality Monitoring stations in Sep.1999.

The API is a simple way of describing air pollution levels. In Hong Kong, the API converts air pollution data from several types of pollutants into a value ranging from 0 to 500. Since API has been replaced by AQHI on 30 December 2013, please refer to the [archive of API webpage](http://www.aqhi.gov.hk/en/related-websites/air-pollution-index.html), if you want to have the information of API.

The above external links lead to a collection of CSV files containing past hourly API data from July 1999 to December 2013.

The Air Pollution Index has been replaced by the Air Quality Health Index (AQHI) since 30 December 2013. At present, there are 3 roadside and 12 general stations reporting AQHI. Please refer to the [thematic page of AQHI](http://www.aqhi.gov.hk/en) for more information.

Past record of Air Pollution Index (Traditional Chinese) Feb 2011

• Resource ID: 089d3031-259c-4a07-89da-6ff7c5c3eaa8
• Format: CSV
• Language: zh-Hant
• Updated: 2025-08-04T17:16:06.635137
• Original URL: http://www.aqhi.gov.hk/api_history/download/hourly/tc_chi/hr022011c.csv

Hourly Air Pollution Index (API) at different Air Quality Monitoring stations in Feb.2011.

The API is a simple way of describing air pollution levels. In Hong Kong, the API converts air pollution data from several types of pollutants into a value ranging from 0 to 500. Since API has been replaced by AQHI on 30 December 2013, please refer to the [archive of API webpage](http://www.aqhi.gov.hk/en/related-websites/air-pollution-index.html), if you want to have the information of API.

The above external links lead to a collection of CSV files containing past hourly API data from July 1999 to December 2013.

The Air Pollution Index has been replaced by the Air Quality Health Index (AQHI) since 30 December 2013. At present, there are 3 roadside and 12 general stations reporting AQHI. Please refer to the [thematic page of AQHI](http://www.aqhi.gov.hk/en) for more information.

Past record of Air Pollution Index (Traditional Chinese) May 2012

• Resource ID: 08c48080-3293-4340-b694-efced0f5936f
• Format: CSV
• Language: zh-Hant
• Updated: 2025-08-04T17:17:43.354448
• Original URL: http://www.aqhi.gov.hk/api_history/download/hourly/tc_chi/hr052012c.csv

Hourly Air Pollution Index (API) at different Air Quality Monitoring stations in May.2012.

The API is a simple way of describing air pollution levels. In Hong Kong, the API converts air pollution data from several types of pollutants into a value ranging from 0 to 500. Since API has been replaced by AQHI on 30 December 2013, please refer to the [archive of API webpage](http://www.aqhi.gov.hk/en/related-websites/air-pollution-index.html), if you want to have the information of API.

The above external links lead to a collection of CSV files containing past hourly API data from July 1999 to December 2013.

The Air Pollution Index has been replaced by the Air Quality Health Index (AQHI) since 30 December 2013. At present, there are 3 roadside and 12 general stations reporting AQHI. Please refer to the [thematic page of AQHI](http://www.aqhi.gov.hk/en) for more information.

Past record of Air Pollution Index (Traditional Chinese) Oct 2006

• Resource ID: 095d0782-4b5c-40e2-9648-70869cb657e1
• Format: CSV
• Language: zh-Hant
• Updated: 2025-08-04T17:11:44.487109
• Original URL: http://www.aqhi.gov.hk/api_history/download/hourly/tc_chi/hr102006c.csv

Hourly Air Pollution Index (API) at different Air Quality Monitoring stations in Oct.2006.

The API is a simple way of describing air pollution levels. In Hong Kong, the API converts air pollution data from several types of pollutants into a value ranging from 0 to 500. Since API has been replaced by AQHI on 30 December 2013, please refer to the [archive of API webpage](http://www.aqhi.gov.hk/en/related-websites/air-pollution-index.html), if you want to have the information of API.

The above external links lead to a collection of CSV files containing past hourly API data from July 1999 to December 2013.

The Air Pollution Index has been replaced by the Air Quality Health Index (AQHI) since 30 December 2013. At present, there are 3 roadside and 12 general stations reporting AQHI. Please refer to the [thematic page of AQHI](http://www.aqhi.gov.hk/en) for more information.

Past record of Air Pollution Index (Traditional Chinese) Aug 2001

• Resource ID: 0e130e14-0f43-4abf-b82a-348baabba442
• Format: CSV
• Language: zh-Hant
• Updated: 2025-08-04T17:08:51.660179
• Original URL: http://www.aqhi.gov.hk/api_history/download/hourly/tc_chi/hr082001c.csv

Hourly Air Pollution Index (API) at different Air Quality Monitoring stations in Aug.2001.

The API is a simple way of describing air pollution levels. In Hong Kong, the API converts air pollution data from several types of pollutants into a value ranging from 0 to 500. Since API has been replaced by AQHI on 30 December 2013, please refer to the [archive of API webpage](http://www.aqhi.gov.hk/en/related-websites/air-pollution-index.html), if you want to have the information of API.

The above external links lead to a collection of CSV files containing past hourly API data from July 1999 to December 2013.

The Air Pollution Index has been replaced by the Air Quality Health Index (AQHI) since 30 December 2013. At present, there are 3 roadside and 12 general stations reporting AQHI. Please refer to the [thematic page of AQHI](http://www.aqhi.gov.hk/en) for more information.

Past record of Air Pollution Index (Traditional Chinese) Jun 2013

• Resource ID: 0f9e3179-3c0b-477f-a403-771ef4ed0538
• Format: CSV
• Language: zh-Hant
• Updated: 2025-08-04T17:19:12.356966
• Original URL: http://www.aqhi.gov.hk/api_history/download/hourly/tc_chi/hr062013c.csv

Hourly Air Pollution Index (API) at different Air Quality Monitoring stations in Jun.2013.

The API is a simple way of describing air pollution levels. In Hong Kong, the API converts air pollution data from several types of pollutants into a value ranging from 0 to 500. Since API has been replaced by AQHI on 30 December 2013, please refer to the [archive of API webpage](http://www.aqhi.gov.hk/en/related-websites/air-pollution-index.html), if you want to have the information of API.

The above external links lead to a collection of CSV files containing past hourly API data from July 1999 to December 2013.

The Air Pollution Index has been replaced by the Air Quality Health Index (AQHI) since 30 December 2013. At present, there are 3 roadside and 12 general stations reporting AQHI. Please refer to the [thematic page of AQHI](http://www.aqhi.gov.hk/en) for more information.

Past record of Air Pollution Index (Traditional Chinese) Aug 2006

• Resource ID: 1302678f-ec9a-4af5-87eb-6029e28e4953
• Format: CSV
• Language: zh-Hant
• Updated: 2025-08-04T17:11:36.475277
• Original URL: http://www.aqhi.gov.hk/api_history/download/hourly/tc_chi/hr082006c.csv

Hourly Air Pollution Index (API) at different Air Quality Monitoring stations in Aug.2006.

The API is a simple way of describing air pollution levels. In Hong Kong, the API converts air pollution data from several types of pollutants into a value ranging from 0 to 500. Since API has been replaced by AQHI on 30 December 2013, please refer to the [archive of API webpage](http://www.aqhi.gov.hk/en/related-websites/air-pollution-index.html), if you want to have the information of API.

The above external links lead to a collection of CSV files containing past hourly API data from July 1999 to December 2013.

The Air Pollution Index has been replaced by the Air Quality Health Index (AQHI) since 30 December 2013. At present, there are 3 roadside and 12 general stations reporting AQHI. Please refer to the [thematic page of AQHI](http://www.aqhi.gov.hk/en) for more information.

Past record of Air Pollution Index (Traditional Chinese) Jul 2008

• Resource ID: 13a59dce-e9a0-4d83-ac96-d7ea29dad982
• Format: CSV
• Language: zh-Hant
• Updated: 2025-08-04T17:13:16.556420
• Original URL: http://www.aqhi.gov.hk/api_history/download/hourly/tc_chi/hr072008c.csv

Hourly Air Pollution Index (API) at different Air Quality Monitoring stations in Jul.2008.

The API is a simple way of describing air pollution levels. In Hong Kong, the API converts air pollution data from several types of pollutants into a value ranging from 0 to 500. Since API has been replaced by AQHI on 30 December 2013, please refer to the [archive of API webpage](http://www.aqhi.gov.hk/en/related-websites/air-pollution-index.html), if you want to have the information of API.

The above external links lead to a collection of CSV files containing past hourly API data from July 1999 to December 2013.

The Air Pollution Index has been replaced by the Air Quality Health Index (AQHI) since 30 December 2013. At present, there are 3 roadside and 12 general stations reporting AQHI. Please refer to the [thematic page of AQHI](http://www.aqhi.gov.hk/en) for more information.

Past record of Air Pollution Index (Traditional Chinese) Jan 2007

• Resource ID: 158b4d34-c267-4474-9270-edbba0eac84b
• Format: CSV
• Language: zh-Hant
• Updated: 2025-08-04T17:11:56.514131
• Original URL: http://www.aqhi.gov.hk/api_history/download/hourly/tc_chi/hr012007c.csv

Hourly Air Pollution Index (API) at different Air Quality Monitoring stations in Jan.2007.

The API is a simple way of describing air pollution levels. In Hong Kong, the API converts air pollution data from several types of pollutants into a value ranging from 0 to 500. Since API has been replaced by AQHI on 30 December 2013, please refer to the [archive of API webpage](http://www.aqhi.gov.hk/en/related-websites/air-pollution-index.html), if you want to have the information of API.

The above external links lead to a collection of CSV files containing past hourly API data from July 1999 to December 2013.

The Air Pollution Index has been replaced by the Air Quality Health Index (AQHI) since 30 December 2013. At present, there are 3 roadside and 12 general stations reporting AQHI. Please refer to the [thematic page of AQHI](http://www.aqhi.gov.hk/en) for more information.

Past record of Air Pollution Index (Traditional Chinese) Dec 2005

• Resource ID: 17a828ec-9885-42ac-b2ee-1fa04cb88cd9
• Format: CSV
• Language: zh-Hant
• Updated: 2025-08-04T17:11:06.617978
• Original URL: http://www.aqhi.gov.hk/api_history/download/hourly/tc_chi/hr122005c.csv

Hourly Air Pollution Index (API) at different Air Quality Monitoring stations in Dec.2005.

The API is a simple way of describing air pollution levels. In Hong Kong, the API converts air pollution data from several types of pollutants into a value ranging from 0 to 500. Since API has been replaced by AQHI on 30 December 2013, please refer to the [archive of API webpage](http://www.aqhi.gov.hk/en/related-websites/air-pollution-index.html), if you want to have the information of API.

The above external links lead to a collection of CSV files containing past hourly API data from July 1999 to December 2013.

The Air Pollution Index has been replaced by the Air Quality Health Index (AQHI) since 30 December 2013. At present, there are 3 roadside and 12 general stations reporting AQHI. Please refer to the [thematic page of AQHI](http://www.aqhi.gov.hk/en) for more information.

Past record of Air Pollution Index (Traditional Chinese) Jun 2011

• Resource ID: 1c276cbd-2fba-47b3-9cfe-8b813c4cf150
• Format: CSV
• Language: zh-Hant
• Updated: 2025-08-04T17:16:31.639950
• Original URL: http://www.aqhi.gov.hk/api_history/download/hourly/tc_chi/hr062011c.csv

Hourly Air Pollution Index (API) at different Air Quality Monitoring stations in Jun.2011.

The API is a simple way of describing air pollution levels. In Hong Kong, the API converts air pollution data from several types of pollutants into a value ranging from 0 to 500. Since API has been replaced by AQHI on 30 December 2013, please refer to the [archive of API webpage](http://www.aqhi.gov.hk/en/related-websites/air-pollution-index.html), if you want to have the information of API.

The above external links lead to a collection of CSV files containing past hourly API data from July 1999 to December 2013.

The Air Pollution Index has been replaced by the Air Quality Health Index (AQHI) since 30 December 2013. At present, there are 3 roadside and 12 general stations reporting AQHI. Please refer to the [thematic page of AQHI](http://www.aqhi.gov.hk/en) for more information.

Past record of Air Pollution Index (Traditional Chinese) Apr 2001

• Resource ID: 1ce76680-afc3-4b3a-a302-d9e2bf7a05ea
• Format: CSV
• Language: zh-Hant
• Updated: 2025-08-04T17:08:45.367292
• Original URL: http://www.aqhi.gov.hk/api_history/download/hourly/tc_chi/hr042001c.csv

Hourly Air Pollution Index (API) at different Air Quality Monitoring stations in Apr.2001.

The API is a simple way of describing air pollution levels. In Hong Kong, the API converts air pollution data from several types of pollutants into a value ranging from 0 to 500. Since API has been replaced by AQHI on 30 December 2013, please refer to the [archive of API webpage](http://www.aqhi.gov.hk/en/related-websites/air-pollution-index.html), if you want to have the information of API.

The above external links lead to a collection of CSV files containing past hourly API data from July 1999 to December 2013.

The Air Pollution Index has been replaced by the Air Quality Health Index (AQHI) since 30 December 2013. At present, there are 3 roadside and 12 general stations reporting AQHI. Please refer to the [thematic page of AQHI](http://www.aqhi.gov.hk/en) for more information.

Past record of Air Pollution Index (Traditional Chinese) Aug 2005

• Resource ID: 1e842465-3ff0-41a4-b67a-b27d80624f0a
• Format: CSV
• Language: zh-Hant
• Updated: 2025-08-04T17:10:52.434866
• Original URL: http://www.aqhi.gov.hk/api_history/download/hourly/tc_chi/hr082005c.csv

Hourly Air Pollution Index (API) at different Air Quality Monitoring stations in Aug.2005.

The API is a simple way of describing air pollution levels. In Hong Kong, the API converts air pollution data from several types of pollutants into a value ranging from 0 to 500. Since API has been replaced by AQHI on 30 December 2013, please refer to the [archive of API webpage](http://www.aqhi.gov.hk/en/related-websites/air-pollution-index.html), if you want to have the information of API.

The above external links lead to a collection of CSV files containing past hourly API data from July 1999 to December 2013.

The Air Pollution Index has been replaced by the Air Quality Health Index (AQHI) since 30 December 2013. At present, there are 3 roadside and 12 general stations reporting AQHI. Please refer to the [thematic page of AQHI](http://www.aqhi.gov.hk/en) for more information.

Past record of Air Pollution Index (Traditional Chinese) Jun 2008

• Resource ID: 2076d26a-b19d-411d-af83-ab2b6cc80d2f
• Format: CSV
• Language: zh-Hant
• Updated: 2025-08-04T17:13:11.865862
• Original URL: http://www.aqhi.gov.hk/api_history/download/hourly/tc_chi/hr062008c.csv

Hourly Air Pollution Index (API) at different Air Quality Monitoring stations in Jun.2008.

The API is a simple way of describing air pollution levels. In Hong Kong, the API converts air pollution data from several types of pollutants into a value ranging from 0 to 500. Since API has been replaced by AQHI on 30 December 2013, please refer to the [archive of API webpage](http://www.aqhi.gov.hk/en/related-websites/air-pollution-index.html), if you want to have the information of API.

The above external links lead to a collection of CSV files containing past hourly API data from July 1999 to December 2013.

The Air Pollution Index has been replaced by the Air Quality Health Index (AQHI) since 30 December 2013. At present, there are 3 roadside and 12 general stations reporting AQHI. Please refer to the [thematic page of AQHI](http://www.aqhi.gov.hk/en) for more information.

Past record of Air Pollution Index (Traditional Chinese) Feb 2000

• Resource ID: 2207dc18-8acf-4928-9f57-85e088f2c4bc
• Format: CSV
• Language: zh-Hant
• Updated: 2025-08-04T17:08:27.743540
• Original URL: http://www.aqhi.gov.hk/api_history/download/hourly/tc_chi/hr022000c.csv

Hourly Air Pollution Index (API) at different Air Quality Monitoring stations in Feb.2000.

The API is a simple way of describing air pollution levels. In Hong Kong, the API converts air pollution data from several types of pollutants into a value ranging from 0 to 500. Since API has been replaced by AQHI on 30 December 2013, please refer to the [archive of API webpage](http://www.aqhi.gov.hk/en/related-websites/air-pollution-index.html), if you want to have the information of API.

The above external links lead to a collection of CSV files containing past hourly API data from July 1999 to December 2013.

The Air Pollution Index has been replaced by the Air Quality Health Index (AQHI) since 30 December 2013. At present, there are 3 roadside and 12 general stations reporting AQHI. Please refer to the [thematic page of AQHI](http://www.aqhi.gov.hk/en) for more information.

Past record of Air Pollution Index (Traditional Chinese) Mar 2004

• Resource ID: 231ba0e1-702a-413f-b170-d06ec7c01fd2
• Format: CSV
• Language: zh-Hant
• Updated: 2025-08-04T17:09:59.824563
• Original URL: http://www.aqhi.gov.hk/api_history/download/hourly/tc_chi/hr032004c.csv

Hourly Air Pollution Index (API) at different Air Quality Monitoring stations in Mar.2004.

The API is a simple way of describing air pollution levels. In Hong Kong, the API converts air pollution data from several types of pollutants into a value ranging from 0 to 500. Since API has been replaced by AQHI on 30 December 2013, please refer to the [archive of API webpage](http://www.aqhi.gov.hk/en/related-websites/air-pollution-index.html), if you want to have the information of API.

The above external links lead to a collection of CSV files containing past hourly API data from July 1999 to December 2013.

The Air Pollution Index has been replaced by the Air Quality Health Index (AQHI) since 30 December 2013. At present, there are 3 roadside and 12 general stations reporting AQHI. Please refer to the [thematic page of AQHI](http://www.aqhi.gov.hk/en) for more information.

Past record of Air Pollution Index (Traditional Chinese) Oct 2000

• Resource ID: 25bbc6a5-9c49-45bf-aff7-9c98af236fdf
• Format: CSV
• Language: zh-Hant
• Updated: 2025-08-04T17:08:37.041207
• Original URL: http://www.aqhi.gov.hk/api_history/download/hourly/tc_chi/hr102000c.csv

Hourly Air Pollution Index (API) at different Air Quality Monitoring stations in Oct.2000.

The API is a simple way of describing air pollution levels. In Hong Kong, the API converts air pollution data from several types of pollutants into a value ranging from 0 to 500. Since API has been replaced by AQHI on 30 December 2013, please refer to the [archive of API webpage](http://www.aqhi.gov.hk/en/related-websites/air-pollution-index.html), if you want to have the information of API.

The above external links lead to a collection of CSV files containing past hourly API data from July 1999 to December 2013.

The Air Pollution Index has been replaced by the Air Quality Health Index (AQHI) since 30 December 2013. At present, there are 3 roadside and 12 general stations reporting AQHI. Please refer to the [thematic page of AQHI](http://www.aqhi.gov.hk/en) for more information.

Past record of Air Pollution Index (Traditional Chinese) Jan 2011

• Resource ID: 292c3de4-b0d3-4e56-8f8d-145c5cf4ac0a
• Format: CSV
• Language: zh-Hant
• Updated: 2025-08-04T17:16:00.451737
• Original URL: http://www.aqhi.gov.hk/api_history/download/hourly/tc_chi/hr012011c.csv

Hourly Air Pollution Index (API) at different Air Quality Monitoring stations in Jan.2011.

The API is a simple way of describing air pollution levels. In Hong Kong, the API converts air pollution data from several types of pollutants into a value ranging from 0 to 500. Since API has been replaced by AQHI on 30 December 2013, please refer to the [archive of API webpage](http://www.aqhi.gov.hk/en/related-websites/air-pollution-index.html), if you want to have the information of API.

The above external links lead to a collection of CSV files containing past hourly API data from July 1999 to December 2013.

The Air Pollution Index has been replaced by the Air Quality Health Index (AQHI) since 30 December 2013. At present, there are 3 roadside and 12 general stations reporting AQHI. Please refer to the [thematic page of AQHI](http://www.aqhi.gov.hk/en) for more information.

Past record of Air Pollution Index (Traditional Chinese) Mar 2006

• Resource ID: 2a71d10d-49c4-4a23-a73f-cc97d0d22119
• Format: CSV
• Language: zh-Hant
• Updated: 2025-08-04T17:11:17.857977
• Original URL: http://www.aqhi.gov.hk/api_history/download/hourly/tc_chi/hr032006c.csv

Hourly Air Pollution Index (API) at different Air Quality Monitoring stations in Mar.2006.

The API is a simple way of describing air pollution levels. In Hong Kong, the API converts air pollution data from several types of pollutants into a value ranging from 0 to 500. Since API has been replaced by AQHI on 30 December 2013, please refer to the [archive of API webpage](http://www.aqhi.gov.hk/en/related-websites/air-pollution-index.html), if you want to have the information of API.

The above external links lead to a collection of CSV files containing past hourly API data from July 1999 to December 2013.

The Air Pollution Index has been replaced by the Air Quality Health Index (AQHI) since 30 December 2013. At present, there are 3 roadside and 12 general stations reporting AQHI. Please refer to the [thematic page of AQHI](http://www.aqhi.gov.hk/en) for more information.

Past record of Air Pollution Index (Traditional Chinese) Jun 2010

• Resource ID: 2d9b2765-6015-4633-922e-a1a03069a1df
• Format: CSV
• Language: zh-Hant
• Updated: 2025-08-04T17:15:18.760128
• Original URL: http://www.aqhi.gov.hk/api_history/download/hourly/tc_chi/hr062010c.csv

Hourly Air Pollution Index (API) at different Air Quality Monitoring stations in Jun.2010.

The API is a simple way of describing air pollution levels. In Hong Kong, the API converts air pollution data from several types of pollutants into a value ranging from 0 to 500. Since API has been replaced by AQHI on 30 December 2013, please refer to the [archive of API webpage](http://www.aqhi.gov.hk/en/related-websites/air-pollution-index.html), if you want to have the information of API.

The above external links lead to a collection of CSV files containing past hourly API data from July 1999 to December 2013.

The Air Pollution Index has been replaced by the Air Quality Health Index (AQHI) since 30 December 2013. At present, there are 3 roadside and 12 general stations reporting AQHI. Please refer to the [thematic page of AQHI](http://www.aqhi.gov.hk/en) for more information.

Past record of Air Pollution Index (Traditional Chinese) Sep 2003

• Resource ID: 32b044c6-65b6-4053-8054-3d31df2e930a
• Format: CSV
• Language: zh-Hant
• Updated: 2025-08-04T17:09:44.232429
• Original URL: http://www.aqhi.gov.hk/api_history/download/hourly/tc_chi/hr092003c.csv

Hourly Air Pollution Index (API) at different Air Quality Monitoring stations in Sep.2003.

The API is a simple way of describing air pollution levels. In Hong Kong, the API converts air pollution data from several types of pollutants into a value ranging from 0 to 500. Since API has been replaced by AQHI on 30 December 2013, please refer to the [archive of API webpage](http://www.aqhi.gov.hk/en/related-websites/air-pollution-index.html), if you want to have the information of API.

The above external links lead to a collection of CSV files containing past hourly API data from July 1999 to December 2013.

The Air Pollution Index has been replaced by the Air Quality Health Index (AQHI) since 30 December 2013. At present, there are 3 roadside and 12 general stations reporting AQHI. Please refer to the [thematic page of AQHI](http://www.aqhi.gov.hk/en) for more information.

Past record of Air Pollution Index (Traditional Chinese) Aug 2013

• Resource ID: 32cae181-d381-44de-bf38-b5c4b5048a3c
• Format: CSV
• Language: zh-Hant
• Updated: 2025-08-04T17:19:26.789055
• Original URL: http://www.aqhi.gov.hk/api_history/download/hourly/tc_chi/hr082013c.csv

Hourly Air Pollution Index (API) at different Air Quality Monitoring stations in Aug.2013.

The API is a simple way of describing air pollution levels. In Hong Kong, the API converts air pollution data from several types of pollutants into a value ranging from 0 to 500. Since API has been replaced by AQHI on 30 December 2013, please refer to the [archive of API webpage](http://www.aqhi.gov.hk/en/related-websites/air-pollution-index.html), if you want to have the information of API.

The above external links lead to a collection of CSV files containing past hourly API data from July 1999 to December 2013.

The Air Pollution Index has been replaced by the Air Quality Health Index (AQHI) since 30 December 2013. At present, there are 3 roadside and 12 general stations reporting AQHI. Please refer to the [thematic page of AQHI](http://www.aqhi.gov.hk/en) for more information.

Past record of Air Pollution Index (Traditional Chinese) Sep 2012

• Resource ID: 341562d3-0dd7-4b86-8090-ff14c2d5118a
• Format: CSV
• Language: zh-Hant
• Updated: 2025-08-04T17:18:09.977742
• Original URL: http://www.aqhi.gov.hk/api_history/download/hourly/tc_chi/hr092012c.csv

Hourly Air Pollution Index (API) at different Air Quality Monitoring stations in Sep.2012.

The API is a simple way of describing air pollution levels. In Hong Kong, the API converts air pollution data from several types of pollutants into a value ranging from 0 to 500. Since API has been replaced by AQHI on 30 December 2013, please refer to the [archive of API webpage](http://www.aqhi.gov.hk/en/related-websites/air-pollution-index.html), if you want to have the information of API.

The above external links lead to a collection of CSV files containing past hourly API data from July 1999 to December 2013.

The Air Pollution Index has been replaced by the Air Quality Health Index (AQHI) since 30 December 2013. At present, there are 3 roadside and 12 general stations reporting AQHI. Please refer to the [thematic page of AQHI](http://www.aqhi.gov.hk/en) for more information.

Past record of Air Pollution Index (Traditional Chinese) Jan 2012

• Resource ID: 34b96e7d-c558-40cf-80a2-b3b7dff26cf1
• Format: CSV
• Language: zh-Hant
• Updated: 2025-08-04T17:17:16.484650
• Original URL: http://www.aqhi.gov.hk/api_history/download/hourly/tc_chi/hr012012c.csv

Hourly Air Pollution Index (API) at different Air Quality Monitoring stations in Jan.2012.

The API is a simple way of describing air pollution levels. In Hong Kong, the API converts air pollution data from several types of pollutants into a value ranging from 0 to 500. Since API has been replaced by AQHI on 30 December 2013, please refer to the [archive of API webpage](http://www.aqhi.gov.hk/en/related-websites/air-pollution-index.html), if you want to have the information of API.

The above external links lead to a collection of CSV files containing past hourly API data from July 1999 to December 2013.

The Air Pollution Index has been replaced by the Air Quality Health Index (AQHI) since 30 December 2013. At present, there are 3 roadside and 12 general stations reporting AQHI. Please refer to the [thematic page of AQHI](http://www.aqhi.gov.hk/en) for more information.

Past record of Air Pollution Index (Traditional Chinese) Feb 2007

• Resource ID: 367245f7-7a8d-43ad-a72e-7861e06e20ef
• Format: CSV
• Language: zh-Hant
• Updated: 2025-08-04T17:12:00.629060
• Original URL: http://www.aqhi.gov.hk/api_history/download/hourly/tc_chi/hr022007c.csv

Hourly Air Pollution Index (API) at different Air Quality Monitoring stations in Feb.2007.

The API is a simple way of describing air pollution levels. In Hong Kong, the API converts air pollution data from several types of pollutants into a value ranging from 0 to 500. Since API has been replaced by AQHI on 30 December 2013, please refer to the [archive of API webpage](http://www.aqhi.gov.hk/en/related-websites/air-pollution-index.html), if you want to have the information of API.

The above external links lead to a collection of CSV files containing past hourly API data from July 1999 to December 2013.

The Air Pollution Index has been replaced by the Air Quality Health Index (AQHI) since 30 December 2013. At present, there are 3 roadside and 12 general stations reporting AQHI. Please refer to the [thematic page of AQHI](http://www.aqhi.gov.hk/en) for more information.

Past record of Air Pollution Index (Traditional Chinese) Sep 2009

• Resource ID: 368a0ccc-25fd-4a84-a682-55f3e03e7f0f
• Format: CSV
• Language: zh-Hant
• Updated: 2025-08-04T17:14:28.461721
• Original URL: http://www.aqhi.gov.hk/api_history/download/hourly/tc_chi/hr092009c.csv

Hourly Air Pollution Index (API) at different Air Quality Monitoring stations in Sep.2009.

The API is a simple way of describing air pollution levels. In Hong Kong, the API converts air pollution data from several types of pollutants into a value ranging from 0 to 500. Since API has been replaced by AQHI on 30 December 2013, please refer to the [archive of API webpage](http://www.aqhi.gov.hk/en/related-websites/air-pollution-index.html), if you want to have the information of API.

The above external links lead to a collection of CSV files containing past hourly API data from July 1999 to December 2013.

The Air Pollution Index has been replaced by the Air Quality Health Index (AQHI) since 30 December 2013. At present, there are 3 roadside and 12 general stations reporting AQHI. Please refer to the [thematic page of AQHI](http://www.aqhi.gov.hk/en) for more information.

Past record of Air Pollution Index (Traditional Chinese) Jan 2010

• Resource ID: 370f645e-8c4a-4a51-9d1c-98627e9da45f
• Format: CSV
• Language: zh-Hant
• Updated: 2025-08-04T17:14:50.097523
• Original URL: http://www.aqhi.gov.hk/api_history/download/hourly/tc_chi/hr012010c.csv

Hourly Air Pollution Index (API) at different Air Quality Monitoring stations in Jan.2010.

The API is a simple way of describing air pollution levels. In Hong Kong, the API converts air pollution data from several types of pollutants into a value ranging from 0 to 500. Since API has been replaced by AQHI on 30 December 2013, please refer to the [archive of API webpage](http://www.aqhi.gov.hk/en/related-websites/air-pollution-index.html), if you want to have the information of API.

The above external links lead to a collection of CSV files containing past hourly API data from July 1999 to December 2013.

The Air Pollution Index has been replaced by the Air Quality Health Index (AQHI) since 30 December 2013. At present, there are 3 roadside and 12 general stations reporting AQHI. Please refer to the [thematic page of AQHI](http://www.aqhi.gov.hk/en) for more information.

Past record of Air Pollution Index (Traditional Chinese) Jul 2011

• Resource ID: 37b8cd9a-2121-4831-b17f-5b0ab795ab21
• Format: CSV
• Language: zh-Hant
• Updated: 2025-08-04T17:16:37.830500
• Original URL: http://www.aqhi.gov.hk/api_history/download/hourly/tc_chi/hr072011c.csv

Hourly Air Pollution Index (API) at different Air Quality Monitoring stations in Jul.2011.

The API is a simple way of describing air pollution levels. In Hong Kong, the API converts air pollution data from several types of pollutants into a value ranging from 0 to 500. Since API has been replaced by AQHI on 30 December 2013, please refer to the [archive of API webpage](http://www.aqhi.gov.hk/en/related-websites/air-pollution-index.html), if you want to have the information of API.

The above external links lead to a collection of CSV files containing past hourly API data from July 1999 to December 2013.

The Air Pollution Index has been replaced by the Air Quality Health Index (AQHI) since 30 December 2013. At present, there are 3 roadside and 12 general stations reporting AQHI. Please refer to the [thematic page of AQHI](http://www.aqhi.gov.hk/en) for more information.

Past record of Air Pollution Index (Traditional Chinese) Feb 2010

• Resource ID: 38311fbd-fff2-469e-8bd6-e2c403135e89
• Format: CSV
• Language: zh-Hant
• Updated: 2025-08-04T17:14:55.590602
• Original URL: http://www.aqhi.gov.hk/api_history/download/hourly/tc_chi/hr022010c.csv

Hourly Air Pollution Index (API) at different Air Quality Monitoring stations in Feb.2010.

The API is a simple way of describing air pollution levels. In Hong Kong, the API converts air pollution data from several types of pollutants into a value ranging from 0 to 500. Since API has been replaced by AQHI on 30 December 2013, please refer to the [archive of API webpage](http://www.aqhi.gov.hk/en/related-websites/air-pollution-index.html), if you want to have the information of API.

The above external links lead to a collection of CSV files containing past hourly API data from July 1999 to December 2013.

The Air Pollution Index has been replaced by the Air Quality Health Index (AQHI) since 30 December 2013. At present, there are 3 roadside and 12 general stations reporting AQHI. Please refer to the [thematic page of AQHI](http://www.aqhi.gov.hk/en) for more information.

Past record of Air Pollution Index (Traditional Chinese) Oct 2013

• Resource ID: 3a1e5f3d-dc9b-4c93-ae31-15243a9c4e72
• Format: CSV
• Language: zh-Hant
• Updated: 2025-08-04T17:19:41.462371
• Original URL: http://www.aqhi.gov.hk/api_history/download/hourly/tc_chi/hr102013c.csv

Hourly Air Pollution Index (API) at different Air Quality Monitoring stations in Oct.2013.

The API is a simple way of describing air pollution levels. In Hong Kong, the API converts air pollution data from several types of pollutants into a value ranging from 0 to 500. Since API has been replaced by AQHI on 30 December 2013, please refer to the [archive of API webpage](http://www.aqhi.gov.hk/en/related-websites/air-pollution-index.html), if you want to have the information of API.

The above external links lead to a collection of CSV files containing past hourly API data from July 1999 to December 2013.

The Air Pollution Index has been replaced by the Air Quality Health Index (AQHI) since 30 December 2013. At present, there are 3 roadside and 12 general stations reporting AQHI. Please refer to the [thematic page of AQHI](http://www.aqhi.gov.hk/en) for more information.

Past record of Air Pollution Index (Traditional Chinese) Apr 2012

• Resource ID: 3a5df839-fb36-4dc7-bab0-52b0270fa67a
• Format: CSV
• Language: zh-Hant
• Updated: 2025-08-04T17:17:36.890688
• Original URL: http://www.aqhi.gov.hk/api_history/download/hourly/tc_chi/hr042012c.csv

Hourly Air Pollution Index (API) at different Air Quality Monitoring stations in Apr.2012.

The API is a simple way of describing air pollution levels. In Hong Kong, the API converts air pollution data from several types of pollutants into a value ranging from 0 to 500. Since API has been replaced by AQHI on 30 December 2013, please refer to the [archive of API webpage](http://www.aqhi.gov.hk/en/related-websites/air-pollution-index.html), if you want to have the information of API.

The above external links lead to a collection of CSV files containing past hourly API data from July 1999 to December 2013.

The Air Pollution Index has been replaced by the Air Quality Health Index (AQHI) since 30 December 2013. At present, there are 3 roadside and 12 general stations reporting AQHI. Please refer to the [thematic page of AQHI](http://www.aqhi.gov.hk/en) for more information.

Past record of Air Pollution Index (Traditional Chinese) Apr 2004

• Resource ID: 3c43b729-f5aa-4e47-9914-f54f618f3d87
• Format: CSV
• Language: zh-Hant
• Updated: 2025-08-04T17:10:02.723555
• Original URL: http://www.aqhi.gov.hk/api_history/download/hourly/tc_chi/hr042004c.csv

Hourly Air Pollution Index (API) at different Air Quality Monitoring stations in Apr.2004.

The API is a simple way of describing air pollution levels. In Hong Kong, the API converts air pollution data from several types of pollutants into a value ranging from 0 to 500. Since API has been replaced by AQHI on 30 December 2013, please refer to the [archive of API webpage](http://www.aqhi.gov.hk/en/related-websites/air-pollution-index.html), if you want to have the information of API.

The above external links lead to a collection of CSV files containing past hourly API data from July 1999 to December 2013.

The Air Pollution Index has been replaced by the Air Quality Health Index (AQHI) since 30 December 2013. At present, there are 3 roadside and 12 general stations reporting AQHI. Please refer to the [thematic page of AQHI](http://www.aqhi.gov.hk/en) for more information.

Past record of Air Pollution Index (Traditional Chinese) Dec 2002

• Resource ID: 3c62d5d9-f2e3-4cd2-ad2f-599055cc5acf
• Format: CSV
• Language: zh-Hant
• Updated: 2025-08-04T17:09:23.543452
• Original URL: http://www.aqhi.gov.hk/api_history/download/hourly/tc_chi/hr122002c.csv

Hourly Air Pollution Index (API) at different Air Quality Monitoring stations in Dec.2002.

The API is a simple way of describing air pollution levels. In Hong Kong, the API converts air pollution data from several types of pollutants into a value ranging from 0 to 500. Since API has been replaced by AQHI on 30 December 2013, please refer to the [archive of API webpage](http://www.aqhi.gov.hk/en/related-websites/air-pollution-index.html), if you want to have the information of API.

The above external links lead to a collection of CSV files containing past hourly API data from July 1999 to December 2013.

The Air Pollution Index has been replaced by the Air Quality Health Index (AQHI) since 30 December 2013. At present, there are 3 roadside and 12 general stations reporting AQHI. Please refer to the [thematic page of AQHI](http://www.aqhi.gov.hk/en) for more information.

Past record of Air Pollution Index (Traditional Chinese) Sep 2005

• Resource ID: 3e11824e-bb93-4239-916b-7c5d0ac29cce
• Format: CSV
• Language: zh-Hant
• Updated: 2025-08-04T17:10:55.884282
• Original URL: http://www.aqhi.gov.hk/api_history/download/hourly/tc_chi/hr092005c.csv

Hourly Air Pollution Index (API) at different Air Quality Monitoring stations in Sep.2005.

The API is a simple way of describing air pollution levels. In Hong Kong, the API converts air pollution data from several types of pollutants into a value ranging from 0 to 500. Since API has been replaced by AQHI on 30 December 2013, please refer to the [archive of API webpage](http://www.aqhi.gov.hk/en/related-websites/air-pollution-index.html), if you want to have the information of API.

The above external links lead to a collection of CSV files containing past hourly API data from July 1999 to December 2013.

The Air Pollution Index has been replaced by the Air Quality Health Index (AQHI) since 30 December 2013. At present, there are 3 roadside and 12 general stations reporting AQHI. Please refer to the [thematic page of AQHI](http://www.aqhi.gov.hk/en) for more information.

Past record of Air Pollution Index (Traditional Chinese) Apr 2009

• Resource ID: 3f7fb666-7ac3-45f7-8281-7deb2505bae2
• Format: CSV
• Language: zh-Hant
• Updated: 2025-08-04T17:14:02.287543
• Original URL: http://www.aqhi.gov.hk/api_history/download/hourly/tc_chi/hr042009c.csv

Hourly Air Pollution Index (API) at different Air Quality Monitoring stations in Apr.2009.

The API is a simple way of describing air pollution levels. In Hong Kong, the API converts air pollution data from several types of pollutants into a value ranging from 0 to 500. Since API has been replaced by AQHI on 30 December 2013, please refer to the [archive of API webpage](http://www.aqhi.gov.hk/en/related-websites/air-pollution-index.html), if you want to have the information of API.

The above external links lead to a collection of CSV files containing past hourly API data from July 1999 to December 2013.

The Air Pollution Index has been replaced by the Air Quality Health Index (AQHI) since 30 December 2013. At present, there are 3 roadside and 12 general stations reporting AQHI. Please refer to the [thematic page of AQHI](http://www.aqhi.gov.hk/en) for more information.

Past record of Air Pollution Index (Traditional Chinese) Oct 2002

• Resource ID: 40d6625b-3119-45c7-b04f-646b51f5311d
• Format: CSV
• Language: zh-Hant
• Updated: 2025-08-04T17:09:19.339483
• Original URL: http://www.aqhi.gov.hk/api_history/download/hourly/tc_chi/hr102002c.csv

Hourly Air Pollution Index (API) at different Air Quality Monitoring stations in Oct.2002.

The API is a simple way of describing air pollution levels. In Hong Kong, the API converts air pollution data from several types of pollutants into a value ranging from 0 to 500. Since API has been replaced by AQHI on 30 December 2013, please refer to the [archive of API webpage](http://www.aqhi.gov.hk/en/related-websites/air-pollution-index.html), if you want to have the information of API.

The above external links lead to a collection of CSV files containing past hourly API data from July 1999 to December 2013.

The Air Pollution Index has been replaced by the Air Quality Health Index (AQHI) since 30 December 2013. At present, there are 3 roadside and 12 general stations reporting AQHI. Please refer to the [thematic page of AQHI](http://www.aqhi.gov.hk/en) for more information.

Past record of Air Pollution Index (Traditional Chinese) Mar 2009

• Resource ID: 41b091fb-f9f4-4fe7-a1d1-ba9748bad842
• Format: CSV
• Language: zh-Hant
• Updated: 2025-08-04T17:13:56.790012
• Original URL: http://www.aqhi.gov.hk/api_history/download/hourly/tc_chi/hr032009c.csv

Hourly Air Pollution Index (API) at different Air Quality Monitoring stations in Mar.2009.

The API is a simple way of describing air pollution levels. In Hong Kong, the API converts air pollution data from several types of pollutants into a value ranging from 0 to 500. Since API has been replaced by AQHI on 30 December 2013, please refer to the [archive of API webpage](http://www.aqhi.gov.hk/en/related-websites/air-pollution-index.html), if you want to have the information of API.

The above external links lead to a collection of CSV files containing past hourly API data from July 1999 to December 2013.

The Air Pollution Index has been replaced by the Air Quality Health Index (AQHI) since 30 December 2013. At present, there are 3 roadside and 12 general stations reporting AQHI. Please refer to the [thematic page of AQHI](http://www.aqhi.gov.hk/en) for more information.

Past record of Air Pollution Index (Traditional Chinese) Nov 2006

• Resource ID: 4426af29-92f3-4501-88fb-df64060ef0ed
• Format: CSV
• Language: zh-Hant
• Updated: 2025-08-04T17:11:48.582443
• Original URL: http://www.aqhi.gov.hk/api_history/download/hourly/tc_chi/hr112006c.csv

Hourly Air Pollution Index (API) at different Air Quality Monitoring stations in Nov.2006.

The API is a simple way of describing air pollution levels. In Hong Kong, the API converts air pollution data from several types of pollutants into a value ranging from 0 to 500. Since API has been replaced by AQHI on 30 December 2013, please refer to the [archive of API webpage](http://www.aqhi.gov.hk/en/related-websites/air-pollution-index.html), if you want to have the information of API.

The above external links lead to a collection of CSV files containing past hourly API data from July 1999 to December 2013.

The Air Pollution Index has been replaced by the Air Quality Health Index (AQHI) since 30 December 2013. At present, there are 3 roadside and 12 general stations reporting AQHI. Please refer to the [thematic page of AQHI](http://www.aqhi.gov.hk/en) for more information.

Past record of Air Pollution Index (Traditional Chinese) Sep 2006

• Resource ID: 450ab9a5-ae2b-42b1-ae2d-5e8c1f082e9b
• Format: CSV
• Language: zh-Hant
• Updated: 2025-08-04T17:11:40.491489
• Original URL: http://www.aqhi.gov.hk/api_history/download/hourly/tc_chi/hr092006c.csv

Hourly Air Pollution Index (API) at different Air Quality Monitoring stations in Sep.2006.

The API is a simple way of describing air pollution levels. In Hong Kong, the API converts air pollution data from several types of pollutants into a value ranging from 0 to 500. Since API has been replaced by AQHI on 30 December 2013, please refer to the [archive of API webpage](http://www.aqhi.gov.hk/en/related-websites/air-pollution-index.html), if you want to have the information of API.

The above external links lead to a collection of CSV files containing past hourly API data from July 1999 to December 2013.

The Air Pollution Index has been replaced by the Air Quality Health Index (AQHI) since 30 December 2013. At present, there are 3 roadside and 12 general stations reporting AQHI. Please refer to the [thematic page of AQHI](http://www.aqhi.gov.hk/en) for more information.

Past record of Air Pollution Index (Traditional Chinese) Apr 2005

• Resource ID: 455f21a4-b19a-4bb3-a888-ea10dc7c388a
• Format: CSV
• Language: zh-Hant
• Updated: 2025-08-04T17:10:39.279504
• Original URL: http://www.aqhi.gov.hk/api_history/download/hourly/tc_chi/hr042005c.csv

Hourly Air Pollution Index (API) at different Air Quality Monitoring stations in Apr.2005.

The API is a simple way of describing air pollution levels. In Hong Kong, the API converts air pollution data from several types of pollutants into a value ranging from 0 to 500. Since API has been replaced by AQHI on 30 December 2013, please refer to the [archive of API webpage](http://www.aqhi.gov.hk/en/related-websites/air-pollution-index.html), if you want to have the information of API.

The above external links lead to a collection of CSV files containing past hourly API data from July 1999 to December 2013.

The Air Pollution Index has been replaced by the Air Quality Health Index (AQHI) since 30 December 2013. At present, there are 3 roadside and 12 general stations reporting AQHI. Please refer to the [thematic page of AQHI](http://www.aqhi.gov.hk/en) for more information.

Past record of Air Pollution Index (Traditional Chinese) Feb 2001

• Resource ID: 4cc33813-98f0-4cc1-a617-19372cbb3d26
• Format: CSV
• Language: zh-Hant
• Updated: 2025-08-04T17:08:42.416932
• Original URL: http://www.aqhi.gov.hk/api_history/download/hourly/tc_chi/hr022001c.csv

Hourly Air Pollution Index (API) at different Air Quality Monitoring stations in Feb.2001.

The API is a simple way of describing air pollution levels. In Hong Kong, the API converts air pollution data from several types of pollutants into a value ranging from 0 to 500. Since API has been replaced by AQHI on 30 December 2013, please refer to the [archive of API webpage](http://www.aqhi.gov.hk/en/related-websites/air-pollution-index.html), if you want to have the information of API.

The above external links lead to a collection of CSV files containing past hourly API data from July 1999 to December 2013.

The Air Pollution Index has been replaced by the Air Quality Health Index (AQHI) since 30 December 2013. At present, there are 3 roadside and 12 general stations reporting AQHI. Please refer to the [thematic page of AQHI](http://www.aqhi.gov.hk/en) for more information.

Past record of Air Pollution Index (Traditional Chinese) Jun 2002

• Resource ID: 4f2166fb-b088-43f0-9874-ec8879ae2785
• Format: CSV
• Language: zh-Hant
• Updated: 2025-08-04T17:09:11.016324
• Original URL: http://www.aqhi.gov.hk/api_history/download/hourly/tc_chi/hr062002c.csv

Hourly Air Pollution Index (API) at different Air Quality Monitoring stations in Jun.2002.

The API is a simple way of describing air pollution levels. In Hong Kong, the API converts air pollution data from several types of pollutants into a value ranging from 0 to 500. Since API has been replaced by AQHI on 30 December 2013, please refer to the [archive of API webpage](http://www.aqhi.gov.hk/en/related-websites/air-pollution-index.html), if you want to have the information of API.

The above external links lead to a collection of CSV files containing past hourly API data from July 1999 to December 2013.

The Air Pollution Index has been replaced by the Air Quality Health Index (AQHI) since 30 December 2013. At present, there are 3 roadside and 12 general stations reporting AQHI. Please refer to the [thematic page of AQHI](http://www.aqhi.gov.hk/en) for more information.

Past record of Air Pollution Index (Traditional Chinese) Dec 2009

• Resource ID: 4f6e601b-2137-4edd-aa69-420b54667bdf
• Format: CSV
• Language: zh-Hant
• Updated: 2025-08-04T17:14:44.615163
• Original URL: http://www.aqhi.gov.hk/api_history/download/hourly/tc_chi/hr122009c.csv

Hourly Air Pollution Index (API) at different Air Quality Monitoring stations in Dec.2009.

The API is a simple way of describing air pollution levels. In Hong Kong, the API converts air pollution data from several types of pollutants into a value ranging from 0 to 500. Since API has been replaced by AQHI on 30 December 2013, please refer to the [archive of API webpage](http://www.aqhi.gov.hk/en/related-websites/air-pollution-index.html), if you want to have the information of API.

The above external links lead to a collection of CSV files containing past hourly API data from July 1999 to December 2013.

The Air Pollution Index has been replaced by the Air Quality Health Index (AQHI) since 30 December 2013. At present, there are 3 roadside and 12 general stations reporting AQHI. Please refer to the [thematic page of AQHI](http://www.aqhi.gov.hk/en) for more information.

Past record of Air Pollution Index (Traditional Chinese) Dec 2007

• Resource ID: 5054f87a-6876-4872-9f36-4a78d1e66785
• Format: CSV
• Language: zh-Hant
• Updated: 2025-08-04T17:12:43.946781
• Original URL: http://www.aqhi.gov.hk/api_history/download/hourly/tc_chi/hr122007c.csv

Hourly Air Pollution Index (API) at different Air Quality Monitoring stations in Dec.2007.

The API is a simple way of describing air pollution levels. In Hong Kong, the API converts air pollution data from several types of pollutants into a value ranging from 0 to 500. Since API has been replaced by AQHI on 30 December 2013, please refer to the [archive of API webpage](http://www.aqhi.gov.hk/en/related-websites/air-pollution-index.html), if you want to have the information of API.

The above external links lead to a collection of CSV files containing past hourly API data from July 1999 to December 2013.

The Air Pollution Index has been replaced by the Air Quality Health Index (AQHI) since 30 December 2013. At present, there are 3 roadside and 12 general stations reporting AQHI. Please refer to the [thematic page of AQHI](http://www.aqhi.gov.hk/en) for more information.

Past record of Air Pollution Index (Traditional Chinese) Sep 2007

• Resource ID: 520c33a1-d1c7-42f9-bd44-756145f420fa
• Format: CSV
• Language: zh-Hant
• Updated: 2025-08-04T17:12:30.799648
• Original URL: http://www.aqhi.gov.hk/api_history/download/hourly/tc_chi/hr092007c.csv

Hourly Air Pollution Index (API) at different Air Quality Monitoring stations in Sep.2007.

The API is a simple way of describing air pollution levels. In Hong Kong, the API converts air pollution data from several types of pollutants into a value ranging from 0 to 500. Since API has been replaced by AQHI on 30 December 2013, please refer to the [archive of API webpage](http://www.aqhi.gov.hk/en/related-websites/air-pollution-index.html), if you want to have the information of API.

The above external links lead to a collection of CSV files containing past hourly API data from July 1999 to December 2013.

The Air Pollution Index has been replaced by the Air Quality Health Index (AQHI) since 30 December 2013. At present, there are 3 roadside and 12 general stations reporting AQHI. Please refer to the [thematic page of AQHI](http://www.aqhi.gov.hk/en) for more information.

Past record of Air Pollution Index (Traditional Chinese) Aug 1999

• Resource ID: 542c4b9f-2cc1-4278-bf70-c92ee15174ed
• Format: CSV
• Language: zh-Hant
• Updated: 2025-08-04T17:08:22.831757
• Original URL: http://www.aqhi.gov.hk/api_history/download/hourly/tc_chi/hr081999c.csv

Hourly Air Pollution Index (API) at different Air Quality Monitoring stations in Aug.1999.

The API is a simple way of describing air pollution levels. In Hong Kong, the API converts air pollution data from several types of pollutants into a value ranging from 0 to 500. Since API has been replaced by AQHI on 30 December 2013, please refer to the [archive of API webpage](http://www.aqhi.gov.hk/en/related-websites/air-pollution-index.html), if you want to have the information of API.

The above external links lead to a collection of CSV files containing past hourly API data from July 1999 to December 2013.

The Air Pollution Index has been replaced by the Air Quality Health Index (AQHI) since 30 December 2013. At present, there are 3 roadside and 12 general stations reporting AQHI. Please refer to the [thematic page of AQHI](http://www.aqhi.gov.hk/en) for more information.

Past record of Air Pollution Index (Traditional Chinese) Jan 2002

• Resource ID: 59d41f84-7bce-4df2-bf42-bfef57755853
• Format: CSV
• Language: zh-Hant
• Updated: 2025-08-04T17:09:00.636954
• Original URL: http://www.aqhi.gov.hk/api_history/download/hourly/tc_chi/hr012002c.csv

Hourly Air Pollution Index (API) at different Air Quality Monitoring stations in Jan.2002.

The API is a simple way of describing air pollution levels. In Hong Kong, the API converts air pollution data from several types of pollutants into a value ranging from 0 to 500. Since API has been replaced by AQHI on 30 December 2013, please refer to the [archive of API webpage](http://www.aqhi.gov.hk/en/related-websites/air-pollution-index.html), if you want to have the information of API.

The above external links lead to a collection of CSV files containing past hourly API data from July 1999 to December 2013.

The Air Pollution Index has been replaced by the Air Quality Health Index (AQHI) since 30 December 2013. At present, there are 3 roadside and 12 general stations reporting AQHI. Please refer to the [thematic page of AQHI](http://www.aqhi.gov.hk/en) for more information.

Past record of Air Pollution Index (Traditional Chinese) Apr 2011

• Resource ID: 59da9021-f2a1-461c-811e-c30cdbfbb6e3
• Format: CSV
• Language: zh-Hant
• Updated: 2025-08-04T17:16:19.104382
• Original URL: http://www.aqhi.gov.hk/api_history/download/hourly/tc_chi/hr042011c.csv

Hourly Air Pollution Index (API) at different Air Quality Monitoring stations in Apr.2011.

The API is a simple way of describing air pollution levels. In Hong Kong, the API converts air pollution data from several types of pollutants into a value ranging from 0 to 500. Since API has been replaced by AQHI on 30 December 2013, please refer to the [archive of API webpage](http://www.aqhi.gov.hk/en/related-websites/air-pollution-index.html), if you want to have the information of API.

The above external links lead to a collection of CSV files containing past hourly API data from July 1999 to December 2013.

The Air Pollution Index has been replaced by the Air Quality Health Index (AQHI) since 30 December 2013. At present, there are 3 roadside and 12 general stations reporting AQHI. Please refer to the [thematic page of AQHI](http://www.aqhi.gov.hk/en) for more information.

Past record of Air Pollution Index (Traditional Chinese) May 2008

• Resource ID: 59db22c3-fc20-483f-aed4-1a54e9601182
• Format: CSV
• Language: zh-Hant
• Updated: 2025-08-04T17:13:07.027109
• Original URL: http://www.aqhi.gov.hk/api_history/download/hourly/tc_chi/hr052008c.csv

Hourly Air Pollution Index (API) at different Air Quality Monitoring stations in May.2008.

The API is a simple way of describing air pollution levels. In Hong Kong, the API converts air pollution data from several types of pollutants into a value ranging from 0 to 500. Since API has been replaced by AQHI on 30 December 2013, please refer to the [archive of API webpage](http://www.aqhi.gov.hk/en/related-websites/air-pollution-index.html), if you want to have the information of API.

The above external links lead to a collection of CSV files containing past hourly API data from July 1999 to December 2013.

The Air Pollution Index has been replaced by the Air Quality Health Index (AQHI) since 30 December 2013. At present, there are 3 roadside and 12 general stations reporting AQHI. Please refer to the [thematic page of AQHI](http://www.aqhi.gov.hk/en) for more information.

Past record of Air Pollution Index (Traditional Chinese) Mar 2011

• Resource ID: 5cd3824a-81ab-4063-b9fd-71fd184f4ed8
• Format: CSV
• Language: zh-Hant
• Updated: 2025-08-04T17:16:12.499501
• Original URL: http://www.aqhi.gov.hk/api_history/download/hourly/tc_chi/hr032011c.csv

Hourly Air Pollution Index (API) at different Air Quality Monitoring stations in Mar.2011.

The API is a simple way of describing air pollution levels. In Hong Kong, the API converts air pollution data from several types of pollutants into a value ranging from 0 to 500. Since API has been replaced by AQHI on 30 December 2013, please refer to the [archive of API webpage](http://www.aqhi.gov.hk/en/related-websites/air-pollution-index.html), if you want to have the information of API.

The above external links lead to a collection of CSV files containing past hourly API data from July 1999 to December 2013.

The Air Pollution Index has been replaced by the Air Quality Health Index (AQHI) since 30 December 2013. At present, there are 3 roadside and 12 general stations reporting AQHI. Please refer to the [thematic page of AQHI](http://www.aqhi.gov.hk/en) for more information.

Past record of Air Pollution Index (Traditional Chinese) May 2000

• Resource ID: 5d022e61-0414-4b3c-8237-5766856df49d
• Format: CSV
• Language: zh-Hant
• Updated: 2025-08-04T17:08:31.061301
• Original URL: http://www.aqhi.gov.hk/api_history/download/hourly/tc_chi/hr052000c.csv

Hourly Air Pollution Index (API) at different Air Quality Monitoring stations in May.2000.

The API is a simple way of describing air pollution levels. In Hong Kong, the API converts air pollution data from several types of pollutants into a value ranging from 0 to 500. Since API has been replaced by AQHI on 30 December 2013, please refer to the [archive of API webpage](http://www.aqhi.gov.hk/en/related-websites/air-pollution-index.html), if you want to have the information of API.

The above external links lead to a collection of CSV files containing past hourly API data from July 1999 to December 2013.

The Air Pollution Index has been replaced by the Air Quality Health Index (AQHI) since 30 December 2013. At present, there are 3 roadside and 12 general stations reporting AQHI. Please refer to the [thematic page of AQHI](http://www.aqhi.gov.hk/en) for more information.

Past record of Air Pollution Index (Traditional Chinese) Feb 2006

• Resource ID: 5e8b2201-7d3d-4486-8605-2e59833ec5df
• Format: CSV
• Language: zh-Hant
• Updated: 2025-08-04T17:11:14.044495
• Original URL: http://www.aqhi.gov.hk/api_history/download/hourly/tc_chi/hr022006c.csv

Hourly Air Pollution Index (API) at different Air Quality Monitoring stations in Feb.2006.

The API is a simple way of describing air pollution levels. In Hong Kong, the API converts air pollution data from several types of pollutants into a value ranging from 0 to 500. Since API has been replaced by AQHI on 30 December 2013, please refer to the [archive of API webpage](http://www.aqhi.gov.hk/en/related-websites/air-pollution-index.html), if you want to have the information of API.

The above external links lead to a collection of CSV files containing past hourly API data from July 1999 to December 2013.

The Air Pollution Index has been replaced by the Air Quality Health Index (AQHI) since 30 December 2013. At present, there are 3 roadside and 12 general stations reporting AQHI. Please refer to the [thematic page of AQHI](http://www.aqhi.gov.hk/en) for more information.

Past record of Air Pollution Index (Traditional Chinese) Jul 2009

• Resource ID: 603dadab-2ea9-47da-84cd-0fb872126b0a
• Format: CSV
• Language: zh-Hant
• Updated: 2025-08-04T17:14:18.043701
• Original URL: http://www.aqhi.gov.hk/api_history/download/hourly/tc_chi/hr072009c.csv

Hourly Air Pollution Index (API) at different Air Quality Monitoring stations in Jul.2009.

The API is a simple way of describing air pollution levels. In Hong Kong, the API converts air pollution data from several types of pollutants into a value ranging from 0 to 500. Since API has been replaced by AQHI on 30 December 2013, please refer to the [archive of API webpage](http://www.aqhi.gov.hk/en/related-websites/air-pollution-index.html), if you want to have the information of API.

The above external links lead to a collection of CSV files containing past hourly API data from July 1999 to December 2013.

The Air Pollution Index has been replaced by the Air Quality Health Index (AQHI) since 30 December 2013. At present, there are 3 roadside and 12 general stations reporting AQHI. Please refer to the [thematic page of AQHI](http://www.aqhi.gov.hk/en) for more information.

Past record of Air Pollution Index (Traditional Chinese) Mar 2007

• Resource ID: 678e7d3f-2571-496b-93c6-6ea1cab31cca
• Format: CSV
• Language: zh-Hant
• Updated: 2025-08-04T17:12:04.781583
• Original URL: http://www.aqhi.gov.hk/api_history/download/hourly/tc_chi/hr032007c.csv

Hourly Air Pollution Index (API) at different Air Quality Monitoring stations in Mar.2007.

The API is a simple way of describing air pollution levels. In Hong Kong, the API converts air pollution data from several types of pollutants into a value ranging from 0 to 500. Since API has been replaced by AQHI on 30 December 2013, please refer to the [archive of API webpage](http://www.aqhi.gov.hk/en/related-websites/air-pollution-index.html), if you want to have the information of API.

The above external links lead to a collection of CSV files containing past hourly API data from July 1999 to December 2013.

The Air Pollution Index has been replaced by the Air Quality Health Index (AQHI) since 30 December 2013. At present, there are 3 roadside and 12 general stations reporting AQHI. Please refer to the [thematic page of AQHI](http://www.aqhi.gov.hk/en) for more information.

Past record of Air Pollution Index (Traditional Chinese) Aug 2012

• Resource ID: 6dfa1859-1461-471c-af4b-8ff8ebb24b17
• Format: CSV
• Language: zh-Hant
• Updated: 2025-08-04T17:18:03.262701
• Original URL: http://www.aqhi.gov.hk/api_history/download/hourly/tc_chi/hr082012c.csv

Hourly Air Pollution Index (API) at different Air Quality Monitoring stations in Aug.2012.

The API is a simple way of describing air pollution levels. In Hong Kong, the API converts air pollution data from several types of pollutants into a value ranging from 0 to 500. Since API has been replaced by AQHI on 30 December 2013, please refer to the [archive of API webpage](http://www.aqhi.gov.hk/en/related-websites/air-pollution-index.html), if you want to have the information of API.

The above external links lead to a collection of CSV files containing past hourly API data from July 1999 to December 2013.

The Air Pollution Index has been replaced by the Air Quality Health Index (AQHI) since 30 December 2013. At present, there are 3 roadside and 12 general stations reporting AQHI. Please refer to the [thematic page of AQHI](http://www.aqhi.gov.hk/en) for more information.

Past record of Air Pollution Index (Traditional Chinese) Aug 2010

• Resource ID: 6f4b0b23-9c84-4ca3-a48f-2e8427067a42
• Format: CSV
• Language: zh-Hant
• Updated: 2025-08-04T17:15:30.692001
• Original URL: http://www.aqhi.gov.hk/api_history/download/hourly/tc_chi/hr082010c.csv

Hourly Air Pollution Index (API) at different Air Quality Monitoring stations in Aug.2010.

The API is a simple way of describing air pollution levels. In Hong Kong, the API converts air pollution data from several types of pollutants into a value ranging from 0 to 500. Since API has been replaced by AQHI on 30 December 2013, please refer to the [archive of API webpage](http://www.aqhi.gov.hk/en/related-websites/air-pollution-index.html), if you want to have the information of API.

The above external links lead to a collection of CSV files containing past hourly API data from July 1999 to December 2013.

The Air Pollution Index has been replaced by the Air Quality Health Index (AQHI) since 30 December 2013. At present, there are 3 roadside and 12 general stations reporting AQHI. Please refer to the [thematic page of AQHI](http://www.aqhi.gov.hk/en) for more information.

Past record of Air Pollution Index (Traditional Chinese) Jan 2013

• Resource ID: 71ad3708-51a0-4d30-9908-1dd6d378fe6f
• Format: CSV
• Language: zh-Hant
• Updated: 2025-08-04T17:18:37.697690
• Original URL: http://www.aqhi.gov.hk/api_history/download/hourly/tc_chi/hr012013c.csv

Hourly Air Pollution Index (API) at different Air Quality Monitoring stations in Jan.2013.

The API is a simple way of describing air pollution levels. In Hong Kong, the API converts air pollution data from several types of pollutants into a value ranging from 0 to 500. Since API has been replaced by AQHI on 30 December 2013, please refer to the [archive of API webpage](http://www.aqhi.gov.hk/en/related-websites/air-pollution-index.html), if you want to have the information of API.

The above external links lead to a collection of CSV files containing past hourly API data from July 1999 to December 2013.

The Air Pollution Index has been replaced by the Air Quality Health Index (AQHI) since 30 December 2013. At present, there are 3 roadside and 12 general stations reporting AQHI. Please refer to the [thematic page of AQHI](http://www.aqhi.gov.hk/en) for more information.

Past record of Air Pollution Index (Traditional Chinese) Oct 2011

• Resource ID: 72365c2c-d44a-423e-a1e8-bcb16b8d8381
• Format: CSV
• Language: zh-Hant
• Updated: 2025-08-04T17:16:57.125692
• Original URL: http://www.aqhi.gov.hk/api_history/download/hourly/tc_chi/hr102011c.csv

Hourly Air Pollution Index (API) at different Air Quality Monitoring stations in Oct.2011.

The API is a simple way of describing air pollution levels. In Hong Kong, the API converts air pollution data from several types of pollutants into a value ranging from 0 to 500. Since API has been replaced by AQHI on 30 December 2013, please refer to the [archive of API webpage](http://www.aqhi.gov.hk/en/related-websites/air-pollution-index.html), if you want to have the information of API.

The above external links lead to a collection of CSV files containing past hourly API data from July 1999 to December 2013.

The Air Pollution Index has been replaced by the Air Quality Health Index (AQHI) since 30 December 2013. At present, there are 3 roadside and 12 general stations reporting AQHI. Please refer to the [thematic page of AQHI](http://www.aqhi.gov.hk/en) for more information.

Past record of Air Pollution Index (Traditional Chinese) May 2002

• Resource ID: 73a7e656-7a78-4654-9e8b-6b227a8cb19b
• Format: CSV
• Language: zh-Hant
• Updated: 2025-08-04T17:09:08.919260
• Original URL: http://www.aqhi.gov.hk/api_history/download/hourly/tc_chi/hr052002c.csv

Hourly Air Pollution Index (API) at different Air Quality Monitoring stations in May.2002.

The API is a simple way of describing air pollution levels. In Hong Kong, the API converts air pollution data from several types of pollutants into a value ranging from 0 to 500. Since API has been replaced by AQHI on 30 December 2013, please refer to the [archive of API webpage](http://www.aqhi.gov.hk/en/related-websites/air-pollution-index.html), if you want to have the information of API.

The above external links lead to a collection of CSV files containing past hourly API data from July 1999 to December 2013.

The Air Pollution Index has been replaced by the Air Quality Health Index (AQHI) since 30 December 2013. At present, there are 3 roadside and 12 general stations reporting AQHI. Please refer to the [thematic page of AQHI](http://www.aqhi.gov.hk/en) for more information.

Past record of Air Pollution Index (Traditional Chinese) Nov 2001

• Resource ID: 760a39ff-9926-49ab-87e8-6c83351b1541
• Format: CSV
• Language: zh-Hant
• Updated: 2025-08-04T17:08:56.882456
• Original URL: http://www.aqhi.gov.hk/api_history/download/hourly/tc_chi/hr112001c.csv

Hourly Air Pollution Index (API) at different Air Quality Monitoring stations in Nov.2001.

The API is a simple way of describing air pollution levels. In Hong Kong, the API converts air pollution data from several types of pollutants into a value ranging from 0 to 500. Since API has been replaced by AQHI on 30 December 2013, please refer to the [archive of API webpage](http://www.aqhi.gov.hk/en/related-websites/air-pollution-index.html), if you want to have the information of API.

The above external links lead to a collection of CSV files containing past hourly API data from July 1999 to December 2013.

The Air Pollution Index has been replaced by the Air Quality Health Index (AQHI) since 30 December 2013. At present, there are 3 roadside and 12 general stations reporting AQHI. Please refer to the [thematic page of AQHI](http://www.aqhi.gov.hk/en) for more information.

Past record of Air Pollution Index (Traditional Chinese) Jan 2006

• Resource ID: 77914cc3-decd-46b2-838c-532f39c9565a
• Format: CSV
• Language: zh-Hant
• Updated: 2025-08-04T17:11:10.312437
• Original URL: http://www.aqhi.gov.hk/api_history/download/hourly/tc_chi/hr012006c.csv

Hourly Air Pollution Index (API) at different Air Quality Monitoring stations in Jan.2006.

The API is a simple way of describing air pollution levels. In Hong Kong, the API converts air pollution data from several types of pollutants into a value ranging from 0 to 500. Since API has been replaced by AQHI on 30 December 2013, please refer to the [archive of API webpage](http://www.aqhi.gov.hk/en/related-websites/air-pollution-index.html), if you want to have the information of API.

The above external links lead to a collection of CSV files containing past hourly API data from July 1999 to December 2013.

The Air Pollution Index has been replaced by the Air Quality Health Index (AQHI) since 30 December 2013. At present, there are 3 roadside and 12 general stations reporting AQHI. Please refer to the [thematic page of AQHI](http://www.aqhi.gov.hk/en) for more information.

Past record of Air Pollution Index (Traditional Chinese) Nov 2013

• Resource ID: 785aad1c-9b3f-4307-8814-1804021e4933
• Format: CSV
• Language: zh-Hant
• Updated: 2025-08-04T17:19:48.737037
• Original URL: http://www.aqhi.gov.hk/api_history/download/hourly/tc_chi/hr112013c.csv

Hourly Air Pollution Index (API) at different Air Quality Monitoring stations in Nov.2013.

The API is a simple way of describing air pollution levels. In Hong Kong, the API converts air pollution data from several types of pollutants into a value ranging from 0 to 500. Since API has been replaced by AQHI on 30 December 2013, please refer to the [archive of API webpage](http://www.aqhi.gov.hk/en/related-websites/air-pollution-index.html), if you want to have the information of API.

The above external links lead to a collection of CSV files containing past hourly API data from July 1999 to December 2013.

The Air Pollution Index has been replaced by the Air Quality Health Index (AQHI) since 30 December 2013. At present, there are 3 roadside and 12 general stations reporting AQHI. Please refer to the [thematic page of AQHI](http://www.aqhi.gov.hk/en) for more information.

Past record of Air Pollution Index (Traditional Chinese) Apr 2008

• Resource ID: 7911c11a-87e1-4145-b5e0-50a85b1e8d50
• Format: CSV
• Language: zh-Hant
• Updated: 2025-08-04T17:13:02.349304
• Original URL: http://www.aqhi.gov.hk/api_history/download/hourly/tc_chi/hr042008c.csv

Hourly Air Pollution Index (API) at different Air Quality Monitoring stations in Apr.2008.

The API is a simple way of describing air pollution levels. In Hong Kong, the API converts air pollution data from several types of pollutants into a value ranging from 0 to 500. Since API has been replaced by AQHI on 30 December 2013, please refer to the [archive of API webpage](http://www.aqhi.gov.hk/en/related-websites/air-pollution-index.html), if you want to have the information of API.

The above external links lead to a collection of CSV files containing past hourly API data from July 1999 to December 2013.

The Air Pollution Index has been replaced by the Air Quality Health Index (AQHI) since 30 December 2013. At present, there are 3 roadside and 12 general stations reporting AQHI. Please refer to the [thematic page of AQHI](http://www.aqhi.gov.hk/en) for more information.

Past record of Air Pollution Index (Traditional Chinese) Jun 2003

• Resource ID: 7a0f5cfb-4f1a-40d3-9661-d5a144882864
• Format: CSV
• Language: zh-Hant
• Updated: 2025-08-04T17:09:37.033597
• Original URL: http://www.aqhi.gov.hk/api_history/download/hourly/tc_chi/hr062003c.csv

Hourly Air Pollution Index (API) at different Air Quality Monitoring stations in Jun.2003.

The API is a simple way of describing air pollution levels. In Hong Kong, the API converts air pollution data from several types of pollutants into a value ranging from 0 to 500. Since API has been replaced by AQHI on 30 December 2013, please refer to the [archive of API webpage](http://www.aqhi.gov.hk/en/related-websites/air-pollution-index.html), if you want to have the information of API.

The above external links lead to a collection of CSV files containing past hourly API data from July 1999 to December 2013.

The Air Pollution Index has been replaced by the Air Quality Health Index (AQHI) since 30 December 2013. At present, there are 3 roadside and 12 general stations reporting AQHI. Please refer to the [thematic page of AQHI](http://www.aqhi.gov.hk/en) for more information.

Past record of Air Pollution Index (Traditional Chinese) Feb 2002

• Resource ID: 7b4140b2-b1f5-4e72-8da7-16c9731dbdb9
• Format: CSV
• Language: zh-Hant
• Updated: 2025-08-04T17:09:02.576747
• Original URL: http://www.aqhi.gov.hk/api_history/download/hourly/tc_chi/hr022002c.csv

Hourly Air Pollution Index (API) at different Air Quality Monitoring stations in Feb.2002.

The API is a simple way of describing air pollution levels. In Hong Kong, the API converts air pollution data from several types of pollutants into a value ranging from 0 to 500. Since API has been replaced by AQHI on 30 December 2013, please refer to the [archive of API webpage](http://www.aqhi.gov.hk/en/related-websites/air-pollution-index.html), if you want to have the information of API.

The above external links lead to a collection of CSV files containing past hourly API data from July 1999 to December 2013.

The Air Pollution Index has been replaced by the Air Quality Health Index (AQHI) since 30 December 2013. At present, there are 3 roadside and 12 general stations reporting AQHI. Please refer to the [thematic page of AQHI](http://www.aqhi.gov.hk/en) for more information.

Past record of Air Pollution Index (Traditional Chinese) Mar 2002

• Resource ID: 7b88ddd2-0fde-41d3-84cd-cca28d3840be
• Format: CSV
• Language: zh-Hant
• Updated: 2025-08-04T17:09:04.710665
• Original URL: http://www.aqhi.gov.hk/api_history/download/hourly/tc_chi/hr032002c.csv

Hourly Air Pollution Index (API) at different Air Quality Monitoring stations in Mar.2002.

The API is a simple way of describing air pollution levels. In Hong Kong, the API converts air pollution data from several types of pollutants into a value ranging from 0 to 500. Since API has been replaced by AQHI on 30 December 2013, please refer to the [archive of API webpage](http://www.aqhi.gov.hk/en/related-websites/air-pollution-index.html), if you want to have the information of API.

The above external links lead to a collection of CSV files containing past hourly API data from July 1999 to December 2013.

The Air Pollution Index has been replaced by the Air Quality Health Index (AQHI) since 30 December 2013. At present, there are 3 roadside and 12 general stations reporting AQHI. Please refer to the [thematic page of AQHI](http://www.aqhi.gov.hk/en) for more information.

Past record of Air Pollution Index (Traditional Chinese) Aug 2002

• Resource ID: 7cbdc815-913c-47cc-a1fb-3e9bd984d4f0
• Format: CSV
• Language: zh-Hant
• Updated: 2025-08-04T17:09:15.293257
• Original URL: http://www.aqhi.gov.hk/api_history/download/hourly/tc_chi/hr082002c.csv

Hourly Air Pollution Index (API) at different Air Quality Monitoring stations in Aug.2002.

The API is a simple way of describing air pollution levels. In Hong Kong, the API converts air pollution data from several types of pollutants into a value ranging from 0 to 500. Since API has been replaced by AQHI on 30 December 2013, please refer to the [archive of API webpage](http://www.aqhi.gov.hk/en/related-websites/air-pollution-index.html), if you want to have the information of API.

The above external links lead to a collection of CSV files containing past hourly API data from July 1999 to December 2013.

The Air Pollution Index has been replaced by the Air Quality Health Index (AQHI) since 30 December 2013. At present, there are 3 roadside and 12 general stations reporting AQHI. Please refer to the [thematic page of AQHI](http://www.aqhi.gov.hk/en) for more information.

Past record of Air Pollution Index (Traditional Chinese) Oct 2009

• Resource ID: 7ecd17f3-d9e2-4709-9df7-22b2d03f0b51
• Format: CSV
• Language: zh-Hant
• Updated: 2025-08-04T17:14:33.905309
• Original URL: http://www.aqhi.gov.hk/api_history/download/hourly/tc_chi/hr102009c.csv

Hourly Air Pollution Index (API) at different Air Quality Monitoring stations in Oct.2009.

The API is a simple way of describing air pollution levels. In Hong Kong, the API converts air pollution data from several types of pollutants into a value ranging from 0 to 500. Since API has been replaced by AQHI on 30 December 2013, please refer to the [archive of API webpage](http://www.aqhi.gov.hk/en/related-websites/air-pollution-index.html), if you want to have the information of API.

The above external links lead to a collection of CSV files containing past hourly API data from July 1999 to December 2013.

The Air Pollution Index has been replaced by the Air Quality Health Index (AQHI) since 30 December 2013. At present, there are 3 roadside and 12 general stations reporting AQHI. Please refer to the [thematic page of AQHI](http://www.aqhi.gov.hk/en) for more information.

Past record of Air Pollution Index (Traditional Chinese) Mar 2001

• Resource ID: 819898a2-13dd-45d4-ad6a-a8f89fd8d573
• Format: CSV
• Language: zh-Hant
• Updated: 2025-08-04T17:08:43.858676
• Original URL: http://www.aqhi.gov.hk/api_history/download/hourly/tc_chi/hr032001c.csv

Hourly Air Pollution Index (API) at different Air Quality Monitoring stations in Mar.2001.

The API is a simple way of describing air pollution levels. In Hong Kong, the API converts air pollution data from several types of pollutants into a value ranging from 0 to 500. Since API has been replaced by AQHI on 30 December 2013, please refer to the [archive of API webpage](http://www.aqhi.gov.hk/en/related-websites/air-pollution-index.html), if you want to have the information of API.

The above external links lead to a collection of CSV files containing past hourly API data from July 1999 to December 2013.

The Air Pollution Index has been replaced by the Air Quality Health Index (AQHI) since 30 December 2013. At present, there are 3 roadside and 12 general stations reporting AQHI. Please refer to the [thematic page of AQHI](http://www.aqhi.gov.hk/en) for more information.

Past record of Air Pollution Index (Traditional Chinese) Nov 2012

• Resource ID: 8298b15f-d6d8-4b0d-8375-a9f50e2314e9
• Format: CSV
• Language: zh-Hant
• Updated: 2025-08-04T17:18:23.710272
• Original URL: http://www.aqhi.gov.hk/api_history/download/hourly/tc_chi/hr112012c.csv

Hourly Air Pollution Index (API) at different Air Quality Monitoring stations in Nov.2012.

The API is a simple way of describing air pollution levels. In Hong Kong, the API converts air pollution data from several types of pollutants into a value ranging from 0 to 500. Since API has been replaced by AQHI on 30 December 2013, please refer to the [archive of API webpage](http://www.aqhi.gov.hk/en/related-websites/air-pollution-index.html), if you want to have the information of API.

The above external links lead to a collection of CSV files containing past hourly API data from July 1999 to December 2013.

The Air Pollution Index has been replaced by the Air Quality Health Index (AQHI) since 30 December 2013. At present, there are 3 roadside and 12 general stations reporting AQHI. Please refer to the [thematic page of AQHI](http://www.aqhi.gov.hk/en) for more information.

Past record of Air Pollution Index (Traditional Chinese) Nov 2009

• Resource ID: 830b4d30-613e-420a-a04c-8812f9ead400
• Format: CSV
• Language: zh-Hant
• Updated: 2025-08-04T17:14:39.103678
• Original URL: http://www.aqhi.gov.hk/api_history/download/hourly/tc_chi/hr112009c.csv

Hourly Air Pollution Index (API) at different Air Quality Monitoring stations in Nov.2009.

The API is a simple way of describing air pollution levels. In Hong Kong, the API converts air pollution data from several types of pollutants into a value ranging from 0 to 500. Since API has been replaced by AQHI on 30 December 2013, please refer to the [archive of API webpage](http://www.aqhi.gov.hk/en/related-websites/air-pollution-index.html), if you want to have the information of API.

The above external links lead to a collection of CSV files containing past hourly API data from July 1999 to December 2013.

The Air Pollution Index has been replaced by the Air Quality Health Index (AQHI) since 30 December 2013. At present, there are 3 roadside and 12 general stations reporting AQHI. Please refer to the [thematic page of AQHI](http://www.aqhi.gov.hk/en) for more information.

Past record of Air Pollution Index (Traditional Chinese) May 2006

• Resource ID: 872321c6-f0af-4994-98cb-0a0683362276
• Format: CSV
• Language: zh-Hant
• Updated: 2025-08-04T17:11:24.934358
• Original URL: http://www.aqhi.gov.hk/api_history/download/hourly/tc_chi/hr052006c.csv

Hourly Air Pollution Index (API) at different Air Quality Monitoring stations in May.2006.

The API is a simple way of describing air pollution levels. In Hong Kong, the API converts air pollution data from several types of pollutants into a value ranging from 0 to 500. Since API has been replaced by AQHI on 30 December 2013, please refer to the [archive of API webpage](http://www.aqhi.gov.hk/en/related-websites/air-pollution-index.html), if you want to have the information of API.

The above external links lead to a collection of CSV files containing past hourly API data from July 1999 to December 2013.

The Air Pollution Index has been replaced by the Air Quality Health Index (AQHI) since 30 December 2013. At present, there are 3 roadside and 12 general stations reporting AQHI. Please refer to the [thematic page of AQHI](http://www.aqhi.gov.hk/en) for more information.

Past record of Air Pollution Index (Traditional Chinese) Oct 2010

• Resource ID: 8857c009-f3db-48d9-9e03-9891f4c2d178
• Format: CSV
• Language: zh-Hant
• Updated: 2025-08-04T17:15:42.066821
• Original URL: http://www.aqhi.gov.hk/api_history/download/hourly/tc_chi/hr102010c.csv

Hourly Air Pollution Index (API) at different Air Quality Monitoring stations in Oct.2010.

The API is a simple way of describing air pollution levels. In Hong Kong, the API converts air pollution data from several types of pollutants into a value ranging from 0 to 500. Since API has been replaced by AQHI on 30 December 2013, please refer to the [archive of API webpage](http://www.aqhi.gov.hk/en/related-websites/air-pollution-index.html), if you want to have the information of API.

The above external links lead to a collection of CSV files containing past hourly API data from July 1999 to December 2013.

The Air Pollution Index has been replaced by the Air Quality Health Index (AQHI) since 30 December 2013. At present, there are 3 roadside and 12 general stations reporting AQHI. Please refer to the [thematic page of AQHI](http://www.aqhi.gov.hk/en) for more information.

Past record of Air Pollution Index (Traditional Chinese) Nov 2005

• Resource ID: 887eca39-9bb2-4558-b588-685fba40bb8e
• Format: CSV
• Language: zh-Hant
• Updated: 2025-08-04T17:11:03.033437
• Original URL: http://www.aqhi.gov.hk/api_history/download/hourly/tc_chi/hr112005c.csv

Hourly Air Pollution Index (API) at different Air Quality Monitoring stations in Nov.2005.

The API is a simple way of describing air pollution levels. In Hong Kong, the API converts air pollution data from several types of pollutants into a value ranging from 0 to 500. Since API has been replaced by AQHI on 30 December 2013, please refer to the [archive of API webpage](http://www.aqhi.gov.hk/en/related-websites/air-pollution-index.html), if you want to have the information of API.

The above external links lead to a collection of CSV files containing past hourly API data from July 1999 to December 2013.

The Air Pollution Index has been replaced by the Air Quality Health Index (AQHI) since 30 December 2013. At present, there are 3 roadside and 12 general stations reporting AQHI. Please refer to the [thematic page of AQHI](http://www.aqhi.gov.hk/en) for more information.

Past record of Air Pollution Index (Traditional Chinese) Jan 2003

• Resource ID: 88b58238-6932-4ace-aa5c-f9626380ec71
• Format: CSV
• Language: zh-Hant
• Updated: 2025-08-04T17:09:25.661268
• Original URL: http://www.aqhi.gov.hk/api_history/download/hourly/tc_chi/hr012003c.csv

Hourly Air Pollution Index (API) at different Air Quality Monitoring stations in Jan.2003.

The API is a simple way of describing air pollution levels. In Hong Kong, the API converts air pollution data from several types of pollutants into a value ranging from 0 to 500. Since API has been replaced by AQHI on 30 December 2013, please refer to the [archive of API webpage](http://www.aqhi.gov.hk/en/related-websites/air-pollution-index.html), if you want to have the information of API.

The above external links lead to a collection of CSV files containing past hourly API data from July 1999 to December 2013.

The Air Pollution Index has been replaced by the Air Quality Health Index (AQHI) since 30 December 2013. At present, there are 3 roadside and 12 general stations reporting AQHI. Please refer to the [thematic page of AQHI](http://www.aqhi.gov.hk/en) for more information.

Past record of Air Pollution Index (Traditional Chinese) Jul 2006

• Resource ID: 8ace0257-5163-4802-be64-f37d130fdf2b
• Format: CSV
• Language: zh-Hant
• Updated: 2025-08-04T17:11:32.547458
• Original URL: http://www.aqhi.gov.hk/api_history/download/hourly/tc_chi/hr072006c.csv

Hourly Air Pollution Index (API) at different Air Quality Monitoring stations in Jul.2006.

The API is a simple way of describing air pollution levels. In Hong Kong, the API converts air pollution data from several types of pollutants into a value ranging from 0 to 500. Since API has been replaced by AQHI on 30 December 2013, please refer to the [archive of API webpage](http://www.aqhi.gov.hk/en/related-websites/air-pollution-index.html), if you want to have the information of API.

The above external links lead to a collection of CSV files containing past hourly API data from July 1999 to December 2013.

The Air Pollution Index has been replaced by the Air Quality Health Index (AQHI) since 30 December 2013. At present, there are 3 roadside and 12 general stations reporting AQHI. Please refer to the [thematic page of AQHI](http://www.aqhi.gov.hk/en) for more information.

Past record of Air Pollution Index (Traditional Chinese) Aug 2009

• Resource ID: 8b22c88c-2d80-4195-9378-ab1e8af8fa29
• Format: CSV
• Language: zh-Hant
• Updated: 2025-08-04T17:14:23.274130
• Original URL: http://www.aqhi.gov.hk/api_history/download/hourly/tc_chi/hr082009c.csv

Hourly Air Pollution Index (API) at different Air Quality Monitoring stations in Aug.2009.

The API is a simple way of describing air pollution levels. In Hong Kong, the API converts air pollution data from several types of pollutants into a value ranging from 0 to 500. Since API has been replaced by AQHI on 30 December 2013, please refer to the [archive of API webpage](http://www.aqhi.gov.hk/en/related-websites/air-pollution-index.html), if you want to have the information of API.

The above external links lead to a collection of CSV files containing past hourly API data from July 1999 to December 2013.

The Air Pollution Index has been replaced by the Air Quality Health Index (AQHI) since 30 December 2013. At present, there are 3 roadside and 12 general stations reporting AQHI. Please refer to the [thematic page of AQHI](http://www.aqhi.gov.hk/en) for more information.

Past record of Air Pollution Index (Traditional Chinese) Aug 2008

• Resource ID: 8e3ad6eb-44bb-4520-99c4-07a89a7b37b9
• Format: CSV
• Language: zh-Hant
• Updated: 2025-08-04T17:13:21.312363
• Original URL: http://www.aqhi.gov.hk/api_history/download/hourly/tc_chi/hr082008c.csv

Hourly Air Pollution Index (API) at different Air Quality Monitoring stations in Aug.2008.

The API is a simple way of describing air pollution levels. In Hong Kong, the API converts air pollution data from several types of pollutants into a value ranging from 0 to 500. Since API has been replaced by AQHI on 30 December 2013, please refer to the [archive of API webpage](http://www.aqhi.gov.hk/en/related-websites/air-pollution-index.html), if you want to have the information of API.

The above external links lead to a collection of CSV files containing past hourly API data from July 1999 to December 2013.

The Air Pollution Index has been replaced by the Air Quality Health Index (AQHI) since 30 December 2013. At present, there are 3 roadside and 12 general stations reporting AQHI. Please refer to the [thematic page of AQHI](http://www.aqhi.gov.hk/en) for more information.

Past record of Air Pollution Index (Traditional Chinese) Jul 2007

• Resource ID: 908ed965-a2b7-4079-aae3-0219a41c05cc
• Format: CSV
• Language: zh-Hant
• Updated: 2025-08-04T17:12:21.690991
• Original URL: http://www.aqhi.gov.hk/api_history/download/hourly/tc_chi/hr072007c.csv

Hourly Air Pollution Index (API) at different Air Quality Monitoring stations in Jul.2007.

The API is a simple way of describing air pollution levels. In Hong Kong, the API converts air pollution data from several types of pollutants into a value ranging from 0 to 500. Since API has been replaced by AQHI on 30 December 2013, please refer to the [archive of API webpage](http://www.aqhi.gov.hk/en/related-websites/air-pollution-index.html), if you want to have the information of API.

The above external links lead to a collection of CSV files containing past hourly API data from July 1999 to December 2013.

The Air Pollution Index has been replaced by the Air Quality Health Index (AQHI) since 30 December 2013. At present, there are 3 roadside and 12 general stations reporting AQHI. Please refer to the [thematic page of AQHI](http://www.aqhi.gov.hk/en) for more information.

Past record of Air Pollution Index (Traditional Chinese) Jun 2009

• Resource ID: 915cf2cd-efa5-4a74-87aa-e0d9bf65b346
• Format: CSV
• Language: zh-Hant
• Updated: 2025-08-04T17:14:12.830848
• Original URL: http://www.aqhi.gov.hk/api_history/download/hourly/tc_chi/hr062009c.csv

Hourly Air Pollution Index (API) at different Air Quality Monitoring stations in Jun.2009.

The API is a simple way of describing air pollution levels. In Hong Kong, the API converts air pollution data from several types of pollutants into a value ranging from 0 to 500. Since API has been replaced by AQHI on 30 December 2013, please refer to the [archive of API webpage](http://www.aqhi.gov.hk/en/related-websites/air-pollution-index.html), if you want to have the information of API.

The above external links lead to a collection of CSV files containing past hourly API data from July 1999 to December 2013.

The Air Pollution Index has been replaced by the Air Quality Health Index (AQHI) since 30 December 2013. At present, there are 3 roadside and 12 general stations reporting AQHI. Please refer to the [thematic page of AQHI](http://www.aqhi.gov.hk/en) for more information.

Past record of Air Pollution Index (Traditional Chinese) Jul 2013

• Resource ID: 9435c8bb-ad2b-49b5-9555-dff01d116757
• Format: CSV
• Language: zh-Hant
• Updated: 2025-08-04T17:19:19.787783
• Original URL: http://www.aqhi.gov.hk/api_history/download/hourly/tc_chi/hr072013c.csv

Hourly Air Pollution Index (API) at different Air Quality Monitoring stations in Jul.2013.

The API is a simple way of describing air pollution levels. In Hong Kong, the API converts air pollution data from several types of pollutants into a value ranging from 0 to 500. Since API has been replaced by AQHI on 30 December 2013, please refer to the [archive of API webpage](http://www.aqhi.gov.hk/en/related-websites/air-pollution-index.html), if you want to have the information of API.

The above external links lead to a collection of CSV files containing past hourly API data from July 1999 to December 2013.

The Air Pollution Index has been replaced by the Air Quality Health Index (AQHI) since 30 December 2013. At present, there are 3 roadside and 12 general stations reporting AQHI. Please refer to the [thematic page of AQHI](http://www.aqhi.gov.hk/en) for more information.

Past record of Air Pollution Index (Traditional Chinese) Apr 2013

• Resource ID: 9535556a-ff82-4961-aee7-df5dce2664c2
• Format: CSV
• Language: zh-Hant
• Updated: 2025-08-04T17:18:58.224045
• Original URL: http://www.aqhi.gov.hk/api_history/download/hourly/tc_chi/hr042013c.csv

Hourly Air Pollution Index (API) at different Air Quality Monitoring stations in Apr.2013.

The API is a simple way of describing air pollution levels. In Hong Kong, the API converts air pollution data from several types of pollutants into a value ranging from 0 to 500. Since API has been replaced by AQHI on 30 December 2013, please refer to the [archive of API webpage](http://www.aqhi.gov.hk/en/related-websites/air-pollution-index.html), if you want to have the information of API.

The above external links lead to a collection of CSV files containing past hourly API data from July 1999 to December 2013.

The Air Pollution Index has been replaced by the Air Quality Health Index (AQHI) since 30 December 2013. At present, there are 3 roadside and 12 general stations reporting AQHI. Please refer to the [thematic page of AQHI](http://www.aqhi.gov.hk/en) for more information.

Past record of Air Pollution Index (Traditional Chinese) Dec 2006

• Resource ID: 959b2b78-6a69-4fa3-8c00-c98609e3744e
• Format: CSV
• Language: zh-Hant
• Updated: 2025-08-04T17:11:52.509473
• Original URL: http://www.aqhi.gov.hk/api_history/download/hourly/tc_chi/hr122006c.csv

Hourly Air Pollution Index (API) at different Air Quality Monitoring stations in Dec.2006.

The API is a simple way of describing air pollution levels. In Hong Kong, the API converts air pollution data from several types of pollutants into a value ranging from 0 to 500. Since API has been replaced by AQHI on 30 December 2013, please refer to the [archive of API webpage](http://www.aqhi.gov.hk/en/related-websites/air-pollution-index.html), if you want to have the information of API.

The above external links lead to a collection of CSV files containing past hourly API data from July 1999 to December 2013.

The Air Pollution Index has been replaced by the Air Quality Health Index (AQHI) since 30 December 2013. At present, there are 3 roadside and 12 general stations reporting AQHI. Please refer to the [thematic page of AQHI](http://www.aqhi.gov.hk/en) for more information.

Past record of Air Pollution Index (Traditional Chinese) Jan 2005

• Resource ID: 96699e91-a1a7-4414-98b0-1f8377963a67
• Format: CSV
• Language: zh-Hant
• Updated: 2025-08-04T17:10:29.628223
• Original URL: http://www.aqhi.gov.hk/api_history/download/hourly/tc_chi/hr012005c.csv

Hourly Air Pollution Index (API) at different Air Quality Monitoring stations in Jan.2005.

The API is a simple way of describing air pollution levels. In Hong Kong, the API converts air pollution data from several types of pollutants into a value ranging from 0 to 500. Since API has been replaced by AQHI on 30 December 2013, please refer to the [archive of API webpage](http://www.aqhi.gov.hk/en/related-websites/air-pollution-index.html), if you want to have the information of API.

The above external links lead to a collection of CSV files containing past hourly API data from July 1999 to December 2013.

The Air Pollution Index has been replaced by the Air Quality Health Index (AQHI) since 30 December 2013. At present, there are 3 roadside and 12 general stations reporting AQHI. Please refer to the [thematic page of AQHI](http://www.aqhi.gov.hk/en) for more information.

Past record of Air Pollution Index (Traditional Chinese) Aug 2007

• Resource ID: 982e30ec-17ca-4859-a8a8-b8592e0b3ac9
• Format: CSV
• Language: zh-Hant
• Updated: 2025-08-04T17:12:26.051045
• Original URL: http://www.aqhi.gov.hk/api_history/download/hourly/tc_chi/hr082007c.csv

Hourly Air Pollution Index (API) at different Air Quality Monitoring stations in Aug.2007.

The API is a simple way of describing air pollution levels. In Hong Kong, the API converts air pollution data from several types of pollutants into a value ranging from 0 to 500. Since API has been replaced by AQHI on 30 December 2013, please refer to the [archive of API webpage](http://www.aqhi.gov.hk/en/related-websites/air-pollution-index.html), if you want to have the information of API.

The above external links lead to a collection of CSV files containing past hourly API data from July 1999 to December 2013.

The Air Pollution Index has been replaced by the Air Quality Health Index (AQHI) since 30 December 2013. At present, there are 3 roadside and 12 general stations reporting AQHI. Please refer to the [thematic page of AQHI](http://www.aqhi.gov.hk/en) for more information.

Past record of Air Pollution Index (Traditional Chinese) May 2001

• Resource ID: 98c06e2b-f988-4963-9c52-fc91cb9b66da
• Format: CSV
• Language: zh-Hant
• Updated: 2025-08-04T17:08:46.914585
• Original URL: http://www.aqhi.gov.hk/api_history/download/hourly/tc_chi/hr052001c.csv

Hourly Air Pollution Index (API) at different Air Quality Monitoring stations in May.2001.

The API is a simple way of describing air pollution levels. In Hong Kong, the API converts air pollution data from several types of pollutants into a value ranging from 0 to 500. Since API has been replaced by AQHI on 30 December 2013, please refer to the [archive of API webpage](http://www.aqhi.gov.hk/en/related-websites/air-pollution-index.html), if you want to have the information of API.

The above external links lead to a collection of CSV files containing past hourly API data from July 1999 to December 2013.

The Air Pollution Index has been replaced by the Air Quality Health Index (AQHI) since 30 December 2013. At present, there are 3 roadside and 12 general stations reporting AQHI. Please refer to the [thematic page of AQHI](http://www.aqhi.gov.hk/en) for more information.

Past record of Air Pollution Index (Traditional Chinese) Mar 2012

• Resource ID: 98c4697e-d1d5-4001-83fa-3481052170b1
• Format: CSV
• Language: zh-Hant
• Updated: 2025-08-04T17:17:29.790978
• Original URL: http://www.aqhi.gov.hk/api_history/download/hourly/tc_chi/hr032012c.csv

Hourly Air Pollution Index (API) at different Air Quality Monitoring stations in Mar.2012.

The API is a simple way of describing air pollution levels. In Hong Kong, the API converts air pollution data from several types of pollutants into a value ranging from 0 to 500. Since API has been replaced by AQHI on 30 December 2013, please refer to the [archive of API webpage](http://www.aqhi.gov.hk/en/related-websites/air-pollution-index.html), if you want to have the information of API.

The above external links lead to a collection of CSV files containing past hourly API data from July 1999 to December 2013.

The Air Pollution Index has been replaced by the Air Quality Health Index (AQHI) since 30 December 2013. At present, there are 3 roadside and 12 general stations reporting AQHI. Please refer to the [thematic page of AQHI](http://www.aqhi.gov.hk/en) for more information.

Past record of Air Pollution Index (Traditional Chinese) Feb 2009

• Resource ID: 99dcc871-94f4-48aa-ac11-2c217404f769
• Format: CSV
• Language: zh-Hant
• Updated: 2025-08-04T17:13:51.662585
• Original URL: http://www.aqhi.gov.hk/api_history/download/hourly/tc_chi/hr022009c.csv

Hourly Air Pollution Index (API) at different Air Quality Monitoring stations in Feb.2009.

The API is a simple way of describing air pollution levels. In Hong Kong, the API converts air pollution data from several types of pollutants into a value ranging from 0 to 500. Since API has been replaced by AQHI on 30 December 2013, please refer to the [archive of API webpage](http://www.aqhi.gov.hk/en/related-websites/air-pollution-index.html), if you want to have the information of API.

The above external links lead to a collection of CSV files containing past hourly API data from July 1999 to December 2013.

The Air Pollution Index has been replaced by the Air Quality Health Index (AQHI) since 30 December 2013. At present, there are 3 roadside and 12 general stations reporting AQHI. Please refer to the [thematic page of AQHI](http://www.aqhi.gov.hk/en) for more information.

Past record of Air Pollution Index (Traditional Chinese) Mar 2005

• Resource ID: 9a6882c4-cb3c-4e6e-9c3b-4e7e574ecb6f
• Format: CSV
• Language: zh-Hant
• Updated: 2025-08-04T17:10:36.026027
• Original URL: http://www.aqhi.gov.hk/api_history/download/hourly/tc_chi/hr032005c.csv

Hourly Air Pollution Index (API) at different Air Quality Monitoring stations in Mar.2005.

The API is a simple way of describing air pollution levels. In Hong Kong, the API converts air pollution data from several types of pollutants into a value ranging from 0 to 500. Since API has been replaced by AQHI on 30 December 2013, please refer to the [archive of API webpage](http://www.aqhi.gov.hk/en/related-websites/air-pollution-index.html), if you want to have the information of API.

The above external links lead to a collection of CSV files containing past hourly API data from July 1999 to December 2013.

The Air Pollution Index has been replaced by the Air Quality Health Index (AQHI) since 30 December 2013. At present, there are 3 roadside and 12 general stations reporting AQHI. Please refer to the [thematic page of AQHI](http://www.aqhi.gov.hk/en) for more information.

Past record of Air Pollution Index (Traditional Chinese) Feb 2003

• Resource ID: 9af7049d-bd7c-40de-a0a5-4ae51a2d6979
• Format: CSV
• Language: zh-Hant
• Updated: 2025-08-04T17:09:27.899356
• Original URL: http://www.aqhi.gov.hk/api_history/download/hourly/tc_chi/hr022003c.csv

Hourly Air Pollution Index (API) at different Air Quality Monitoring stations in Feb.2003.

The API is a simple way of describing air pollution levels. In Hong Kong, the API converts air pollution data from several types of pollutants into a value ranging from 0 to 500. Since API has been replaced by AQHI on 30 December 2013, please refer to the [archive of API webpage](http://www.aqhi.gov.hk/en/related-websites/air-pollution-index.html), if you want to have the information of API.

The above external links lead to a collection of CSV files containing past hourly API data from July 1999 to December 2013.

The Air Pollution Index has been replaced by the Air Quality Health Index (AQHI) since 30 December 2013. At present, there are 3 roadside and 12 general stations reporting AQHI. Please refer to the [thematic page of AQHI](http://www.aqhi.gov.hk/en) for more information.

Past record of Air Pollution Index (Traditional Chinese) Aug 2004

• Resource ID: 9c639b63-85c9-4fa5-a469-74fe2fbc3223
• Format: CSV
• Language: zh-Hant
• Updated: 2025-08-04T17:10:14.370277
• Original URL: http://www.aqhi.gov.hk/api_history/download/hourly/tc_chi/hr082004c.csv

Hourly Air Pollution Index (API) at different Air Quality Monitoring stations in Aug.2004.

The API is a simple way of describing air pollution levels. In Hong Kong, the API converts air pollution data from several types of pollutants into a value ranging from 0 to 500. Since API has been replaced by AQHI on 30 December 2013, please refer to the [archive of API webpage](http://www.aqhi.gov.hk/en/related-websites/air-pollution-index.html), if you want to have the information of API.

The above external links lead to a collection of CSV files containing past hourly API data from July 1999 to December 2013.

The Air Pollution Index has been replaced by the Air Quality Health Index (AQHI) since 30 December 2013. At present, there are 3 roadside and 12 general stations reporting AQHI. Please refer to the [thematic page of AQHI](http://www.aqhi.gov.hk/en) for more information.

Past record of Air Pollution Index (Traditional Chinese) May 2003

• Resource ID: 9da30cb1-d873-464e-b5bd-bde90598d137
• Format: CSV
• Language: zh-Hant
• Updated: 2025-08-04T17:09:34.642222
• Original URL: http://www.aqhi.gov.hk/api_history/download/hourly/tc_chi/hr052003c.csv

Hourly Air Pollution Index (API) at different Air Quality Monitoring stations in May.2003.

The API is a simple way of describing air pollution levels. In Hong Kong, the API converts air pollution data from several types of pollutants into a value ranging from 0 to 500. Since API has been replaced by AQHI on 30 December 2013, please refer to the [archive of API webpage](http://www.aqhi.gov.hk/en/related-websites/air-pollution-index.html), if you want to have the information of API.

The above external links lead to a collection of CSV files containing past hourly API data from July 1999 to December 2013.

The Air Pollution Index has been replaced by the Air Quality Health Index (AQHI) since 30 December 2013. At present, there are 3 roadside and 12 general stations reporting AQHI. Please refer to the [thematic page of AQHI](http://www.aqhi.gov.hk/en) for more information.

Past record of Air Pollution Index (Traditional Chinese) Jan 2000

• Resource ID: 9e7902b5-363a-486d-928f-ae386b183aa6
• Format: CSV
• Language: zh-Hant
• Updated: 2025-08-04T17:08:26.801368
• Original URL: http://www.aqhi.gov.hk/api_history/download/hourly/tc_chi/hr012000c.csv

Hourly Air Pollution Index (API) at different Air Quality Monitoring stations in Jan.2000.

The API is a simple way of describing air pollution levels. In Hong Kong, the API converts air pollution data from several types of pollutants into a value ranging from 0 to 500. Since API has been replaced by AQHI on 30 December 2013, please refer to the [archive of API webpage](http://www.aqhi.gov.hk/en/related-websites/air-pollution-index.html), if you want to have the information of API.

The above external links lead to a collection of CSV files containing past hourly API data from July 1999 to December 2013.

The Air Pollution Index has been replaced by the Air Quality Health Index (AQHI) since 30 December 2013. At present, there are 3 roadside and 12 general stations reporting AQHI. Please refer to the [thematic page of AQHI](http://www.aqhi.gov.hk/en) for more information.

Past record of Air Pollution Index (Traditional Chinese) Sep 2008

• Resource ID: 9fde4367-36f2-4e83-80cb-9b5b1a9aa1cc
• Format: CSV
• Language: zh-Hant
• Updated: 2025-08-04T17:13:26.323652
• Original URL: http://www.aqhi.gov.hk/api_history/download/hourly/tc_chi/hr092008c.csv

Hourly Air Pollution Index (API) at different Air Quality Monitoring stations in Sep.2008.

The API is a simple way of describing air pollution levels. In Hong Kong, the API converts air pollution data from several types of pollutants into a value ranging from 0 to 500. Since API has been replaced by AQHI on 30 December 2013, please refer to the [archive of API webpage](http://www.aqhi.gov.hk/en/related-websites/air-pollution-index.html), if you want to have the information of API.

The above external links lead to a collection of CSV files containing past hourly API data from July 1999 to December 2013.

The Air Pollution Index has been replaced by the Air Quality Health Index (AQHI) since 30 December 2013. At present, there are 3 roadside and 12 general stations reporting AQHI. Please refer to the [thematic page of AQHI](http://www.aqhi.gov.hk/en) for more information.

Past record of Air Pollution Index (Traditional Chinese) Dec 2010

• Resource ID: a2d1680a-d11f-4df2-9a71-b54a4d66b3f5
• Format: CSV
• Language: zh-Hant
• Updated: 2025-08-04T17:15:54.260081
• Original URL: http://www.aqhi.gov.hk/api_history/download/hourly/tc_chi/hr122010c.csv

Hourly Air Pollution Index (API) at different Air Quality Monitoring stations in Dec.2010.

The API is a simple way of describing air pollution levels. In Hong Kong, the API converts air pollution data from several types of pollutants into a value ranging from 0 to 500. Since API has been replaced by AQHI on 30 December 2013, please refer to the [archive of API webpage](http://www.aqhi.gov.hk/en/related-websites/air-pollution-index.html), if you want to have the information of API.

The above external links lead to a collection of CSV files containing past hourly API data from July 1999 to December 2013.

The Air Pollution Index has been replaced by the Air Quality Health Index (AQHI) since 30 December 2013. At present, there are 3 roadside and 12 general stations reporting AQHI. Please refer to the [thematic page of AQHI](http://www.aqhi.gov.hk/en) for more information.

Past record of Air Pollution Index (Traditional Chinese) Sep 2002

• Resource ID: a74cbe8a-dfc3-4ef2-a2c0-bc8a5ad0753d
• Format: CSV
• Language: zh-Hant
• Updated: 2025-08-04T17:09:17.391684
• Original URL: http://www.aqhi.gov.hk/api_history/download/hourly/tc_chi/hr092002c.csv

Hourly Air Pollution Index (API) at different Air Quality Monitoring stations in Sep.2002.

The API is a simple way of describing air pollution levels. In Hong Kong, the API converts air pollution data from several types of pollutants into a value ranging from 0 to 500. Since API has been replaced by AQHI on 30 December 2013, please refer to the [archive of API webpage](http://www.aqhi.gov.hk/en/related-websites/air-pollution-index.html), if you want to have the information of API.

The above external links lead to a collection of CSV files containing past hourly API data from July 1999 to December 2013.

The Air Pollution Index has been replaced by the Air Quality Health Index (AQHI) since 30 December 2013. At present, there are 3 roadside and 12 general stations reporting AQHI. Please refer to the [thematic page of AQHI](http://www.aqhi.gov.hk/en) for more information.

Past record of Air Pollution Index (Traditional Chinese) Jan 2001

• Resource ID: a86314a9-b95d-4577-a462-927ee42d6b49
• Format: CSV
• Language: zh-Hant
• Updated: 2025-08-04T17:08:41.056648
• Original URL: http://www.aqhi.gov.hk/api_history/download/hourly/tc_chi/hr012001c.csv

Hourly Air Pollution Index (API) at different Air Quality Monitoring stations in Jan.2001.

The API is a simple way of describing air pollution levels. In Hong Kong, the API converts air pollution data from several types of pollutants into a value ranging from 0 to 500. Since API has been replaced by AQHI on 30 December 2013, please refer to the [archive of API webpage](http://www.aqhi.gov.hk/en/related-websites/air-pollution-index.html), if you want to have the information of API.

The above external links lead to a collection of CSV files containing past hourly API data from July 1999 to December 2013.

The Air Pollution Index has been replaced by the Air Quality Health Index (AQHI) since 30 December 2013. At present, there are 3 roadside and 12 general stations reporting AQHI. Please refer to the [thematic page of AQHI](http://www.aqhi.gov.hk/en) for more information.

Past record of Air Pollution Index (Traditional Chinese) Apr 2007

• Resource ID: aa2f3876-cda0-4ebe-a04d-85322a62cc7a
• Format: CSV
• Language: zh-Hant
• Updated: 2025-08-04T17:12:09.017316
• Original URL: http://www.aqhi.gov.hk/api_history/download/hourly/tc_chi/hr042007c.csv

Hourly Air Pollution Index (API) at different Air Quality Monitoring stations in Apr.2007.

The API is a simple way of describing air pollution levels. In Hong Kong, the API converts air pollution data from several types of pollutants into a value ranging from 0 to 500. Since API has been replaced by AQHI on 30 December 2013, please refer to the [archive of API webpage](http://www.aqhi.gov.hk/en/related-websites/air-pollution-index.html), if you want to have the information of API.

The above external links lead to a collection of CSV files containing past hourly API data from July 1999 to December 2013.

The Air Pollution Index has been replaced by the Air Quality Health Index (AQHI) since 30 December 2013. At present, there are 3 roadside and 12 general stations reporting AQHI. Please refer to the [thematic page of AQHI](http://www.aqhi.gov.hk/en) for more information.

Past record of Air Pollution Index (Traditional Chinese) Dec 2008

• Resource ID: aa89deca-4b2d-438e-ac3d-4d2f0640abee
• Format: CSV
• Language: zh-Hant
• Updated: 2025-08-04T17:13:40.901508
• Original URL: http://www.aqhi.gov.hk/api_history/download/hourly/tc_chi/hr122008c.csv

Hourly Air Pollution Index (API) at different Air Quality Monitoring stations in Dec.2008.

The API is a simple way of describing air pollution levels. In Hong Kong, the API converts air pollution data from several types of pollutants into a value ranging from 0 to 500. Since API has been replaced by AQHI on 30 December 2013, please refer to the [archive of API webpage](http://www.aqhi.gov.hk/en/related-websites/air-pollution-index.html), if you want to have the information of API.

The above external links lead to a collection of CSV files containing past hourly API data from July 1999 to December 2013.

The Air Pollution Index has been replaced by the Air Quality Health Index (AQHI) since 30 December 2013. At present, there are 3 roadside and 12 general stations reporting AQHI. Please refer to the [thematic page of AQHI](http://www.aqhi.gov.hk/en) for more information.

Past record of Air Pollution Index (Traditional Chinese) Dec 1999

• Resource ID: ad649b05-df91-4159-ace1-58b76014f3bb
• Format: CSV
• Language: zh-Hant
• Updated: 2025-08-04T17:08:25.945975
• Original URL: http://www.aqhi.gov.hk/api_history/download/hourly/tc_chi/hr121999c.csv

Hourly Air Pollution Index (API) at different Air Quality Monitoring stations in Dec.1999.

The API is a simple way of describing air pollution levels. In Hong Kong, the API converts air pollution data from several types of pollutants into a value ranging from 0 to 500. Since API has been replaced by AQHI on 30 December 2013, please refer to the [archive of API webpage](http://www.aqhi.gov.hk/en/related-websites/air-pollution-index.html), if you want to have the information of API.

The above external links lead to a collection of CSV files containing past hourly API data from July 1999 to December 2013.

The Air Pollution Index has been replaced by the Air Quality Health Index (AQHI) since 30 December 2013. At present, there are 3 roadside and 12 general stations reporting AQHI. Please refer to the [thematic page of AQHI](http://www.aqhi.gov.hk/en) for more information.

Past record of Air Pollution Index (Traditional Chinese) Aug 2003

• Resource ID: ad845bb8-6737-454c-bed8-7fc5eb89d9c0
• Format: CSV
• Language: zh-Hant
• Updated: 2025-08-04T17:09:41.822195
• Original URL: http://www.aqhi.gov.hk/api_history/download/hourly/tc_chi/hr082003c.csv

Hourly Air Pollution Index (API) at different Air Quality Monitoring stations in Aug.2003.

The API is a simple way of describing air pollution levels. In Hong Kong, the API converts air pollution data from several types of pollutants into a value ranging from 0 to 500. Since API has been replaced by AQHI on 30 December 2013, please refer to the [archive of API webpage](http://www.aqhi.gov.hk/en/related-websites/air-pollution-index.html), if you want to have the information of API.

The above external links lead to a collection of CSV files containing past hourly API data from July 1999 to December 2013.

The Air Pollution Index has been replaced by the Air Quality Health Index (AQHI) since 30 December 2013. At present, there are 3 roadside and 12 general stations reporting AQHI. Please refer to the [thematic page of AQHI](http://www.aqhi.gov.hk/en) for more information.

Past record of Air Pollution Index (Traditional Chinese) Nov 2000

• Resource ID: ae999bc0-1392-4d45-9e16-646108e1bf79
• Format: CSV
• Language: zh-Hant
• Updated: 2025-08-04T17:08:38.421823
• Original URL: http://www.aqhi.gov.hk/api_history/download/hourly/tc_chi/hr112000c.csv

Hourly Air Pollution Index (API) at different Air Quality Monitoring stations in Nov.2000.

The API is a simple way of describing air pollution levels. In Hong Kong, the API converts air pollution data from several types of pollutants into a value ranging from 0 to 500. Since API has been replaced by AQHI on 30 December 2013, please refer to the [archive of API webpage](http://www.aqhi.gov.hk/en/related-websites/air-pollution-index.html), if you want to have the information of API.

The above external links lead to a collection of CSV files containing past hourly API data from July 1999 to December 2013.

The Air Pollution Index has been replaced by the Air Quality Health Index (AQHI) since 30 December 2013. At present, there are 3 roadside and 12 general stations reporting AQHI. Please refer to the [thematic page of AQHI](http://www.aqhi.gov.hk/en) for more information.

Past record of Air Pollution Index (Traditional Chinese) Oct 2012

• Resource ID: aeaaa77d-254e-4f80-9d32-ff993ec2dd78
• Format: CSV
• Language: zh-Hant
• Updated: 2025-08-04T17:18:16.723806
• Original URL: http://www.aqhi.gov.hk/api_history/download/hourly/tc_chi/hr102012c.csv

Hourly Air Pollution Index (API) at different Air Quality Monitoring stations in Oct.2012.

The API is a simple way of describing air pollution levels. In Hong Kong, the API converts air pollution data from several types of pollutants into a value ranging from 0 to 500. Since API has been replaced by AQHI on 30 December 2013, please refer to the [archive of API webpage](http://www.aqhi.gov.hk/en/related-websites/air-pollution-index.html), if you want to have the information of API.

The above external links lead to a collection of CSV files containing past hourly API data from July 1999 to December 2013.

The Air Pollution Index has been replaced by the Air Quality Health Index (AQHI) since 30 December 2013. At present, there are 3 roadside and 12 general stations reporting AQHI. Please refer to the [thematic page of AQHI](http://www.aqhi.gov.hk/en) for more information.

Past record of Air Pollution Index (Traditional Chinese) Sep 2004

• Resource ID: b24361dc-8590-4752-8f41-3c54278da607
• Format: CSV
• Language: zh-Hant
• Updated: 2025-08-04T17:10:17.201096
• Original URL: http://www.aqhi.gov.hk/api_history/download/hourly/tc_chi/hr092004c.csv

Hourly Air Pollution Index (API) at different Air Quality Monitoring stations in Sep.2004.

The API is a simple way of describing air pollution levels. In Hong Kong, the API converts air pollution data from several types of pollutants into a value ranging from 0 to 500. Since API has been replaced by AQHI on 30 December 2013, please refer to the [archive of API webpage](http://www.aqhi.gov.hk/en/related-websites/air-pollution-index.html), if you want to have the information of API.

The above external links lead to a collection of CSV files containing past hourly API data from July 1999 to December 2013.

The Air Pollution Index has been replaced by the Air Quality Health Index (AQHI) since 30 December 2013. At present, there are 3 roadside and 12 general stations reporting AQHI. Please refer to the [thematic page of AQHI](http://www.aqhi.gov.hk/en) for more information.

Past record of Air Pollution Index (Traditional Chinese) Nov 2011

• Resource ID: b29f1931-6bd2-4345-83ba-336360af59f1
• Format: CSV
• Language: zh-Hant
• Updated: 2025-08-04T17:17:03.623961
• Original URL: http://www.aqhi.gov.hk/api_history/download/hourly/tc_chi/hr112011c.csv

Hourly Air Pollution Index (API) at different Air Quality Monitoring stations in Nov.2011.

The API is a simple way of describing air pollution levels. In Hong Kong, the API converts air pollution data from several types of pollutants into a value ranging from 0 to 500. Since API has been replaced by AQHI on 30 December 2013, please refer to the [archive of API webpage](http://www.aqhi.gov.hk/en/related-websites/air-pollution-index.html), if you want to have the information of API.

The above external links lead to a collection of CSV files containing past hourly API data from July 1999 to December 2013.

The Air Pollution Index has been replaced by the Air Quality Health Index (AQHI) since 30 December 2013. At present, there are 3 roadside and 12 general stations reporting AQHI. Please refer to the [thematic page of AQHI](http://www.aqhi.gov.hk/en) for more information.

Past record of Air Pollution Index (Traditional Chinese) Jul 2010

• Resource ID: b30241d8-9044-43af-a068-c4b9ecaa756e
• Format: CSV
• Language: zh-Hant
• Updated: 2025-08-04T17:15:24.550256
• Original URL: http://www.aqhi.gov.hk/api_history/download/hourly/tc_chi/hr072010c.csv

Hourly Air Pollution Index (API) at different Air Quality Monitoring stations in Jul.2010.

The API is a simple way of describing air pollution levels. In Hong Kong, the API converts air pollution data from several types of pollutants into a value ranging from 0 to 500. Since API has been replaced by AQHI on 30 December 2013, please refer to the [archive of API webpage](http://www.aqhi.gov.hk/en/related-websites/air-pollution-index.html), if you want to have the information of API.

The above external links lead to a collection of CSV files containing past hourly API data from July 1999 to December 2013.

The Air Pollution Index has been replaced by the Air Quality Health Index (AQHI) since 30 December 2013. At present, there are 3 roadside and 12 general stations reporting AQHI. Please refer to the [thematic page of AQHI](http://www.aqhi.gov.hk/en) for more information.

Past record of Air Pollution Index (Traditional Chinese) Jun 2006

• Resource ID: b4d15f03-14b3-4e5d-92e6-866fde68d78b
• Format: CSV
• Language: zh-Hant
• Updated: 2025-08-04T17:11:28.744032
• Original URL: http://www.aqhi.gov.hk/api_history/download/hourly/tc_chi/hr062006c.csv

Hourly Air Pollution Index (API) at different Air Quality Monitoring stations in Jun.2006.

The API is a simple way of describing air pollution levels. In Hong Kong, the API converts air pollution data from several types of pollutants into a value ranging from 0 to 500. Since API has been replaced by AQHI on 30 December 2013, please refer to the [archive of API webpage](http://www.aqhi.gov.hk/en/related-websites/air-pollution-index.html), if you want to have the information of API.

The above external links lead to a collection of CSV files containing past hourly API data from July 1999 to December 2013.

The Air Pollution Index has been replaced by the Air Quality Health Index (AQHI) since 30 December 2013. At present, there are 3 roadside and 12 general stations reporting AQHI. Please refer to the [thematic page of AQHI](http://www.aqhi.gov.hk/en) for more information.

Past record of Air Pollution Index (Traditional Chinese) Oct 2003

• Resource ID: b58a72e9-33ec-46b6-a588-785b33c39087
• Format: CSV
• Language: zh-Hant
• Updated: 2025-08-04T17:09:46.707641
• Original URL: http://www.aqhi.gov.hk/api_history/download/hourly/tc_chi/hr102003c.csv

Hourly Air Pollution Index (API) at different Air Quality Monitoring stations in Oct.2003.

The API is a simple way of describing air pollution levels. In Hong Kong, the API converts air pollution data from several types of pollutants into a value ranging from 0 to 500. Since API has been replaced by AQHI on 30 December 2013, please refer to the [archive of API webpage](http://www.aqhi.gov.hk/en/related-websites/air-pollution-index.html), if you want to have the information of API.

The above external links lead to a collection of CSV files containing past hourly API data from July 1999 to December 2013.

The Air Pollution Index has been replaced by the Air Quality Health Index (AQHI) since 30 December 2013. At present, there are 3 roadside and 12 general stations reporting AQHI. Please refer to the [thematic page of AQHI](http://www.aqhi.gov.hk/en) for more information.

Past record of Air Pollution Index (Traditional Chinese) Jul 2003

• Resource ID: b692fedb-5290-4127-88c9-9144f00ffdf6
• Format: CSV
• Language: zh-Hant
• Updated: 2025-08-04T17:09:39.437882
• Original URL: http://www.aqhi.gov.hk/api_history/download/hourly/tc_chi/hr072003c.csv

Hourly Air Pollution Index (API) at different Air Quality Monitoring stations in Jul.2003.

The API is a simple way of describing air pollution levels. In Hong Kong, the API converts air pollution data from several types of pollutants into a value ranging from 0 to 500. Since API has been replaced by AQHI on 30 December 2013, please refer to the [archive of API webpage](http://www.aqhi.gov.hk/en/related-websites/air-pollution-index.html), if you want to have the information of API.

The above external links lead to a collection of CSV files containing past hourly API data from July 1999 to December 2013.

The Air Pollution Index has been replaced by the Air Quality Health Index (AQHI) since 30 December 2013. At present, there are 3 roadside and 12 general stations reporting AQHI. Please refer to the [thematic page of AQHI](http://www.aqhi.gov.hk/en) for more information.

Past record of Air Pollution Index (Traditional Chinese) Jul 2004

• Resource ID: b78b6b28-0735-4d25-9beb-b4482b408a8d
• Format: CSV
• Language: zh-Hant
• Updated: 2025-08-04T17:10:11.455905
• Original URL: http://www.aqhi.gov.hk/api_history/download/hourly/tc_chi/hr072004c.csv

Hourly Air Pollution Index (API) at different Air Quality Monitoring stations in Jul.2004.

The API is a simple way of describing air pollution levels. In Hong Kong, the API converts air pollution data from several types of pollutants into a value ranging from 0 to 500. Since API has been replaced by AQHI on 30 December 2013, please refer to the [archive of API webpage](http://www.aqhi.gov.hk/en/related-websites/air-pollution-index.html), if you want to have the information of API.

The above external links lead to a collection of CSV files containing past hourly API data from July 1999 to December 2013.

The Air Pollution Index has been replaced by the Air Quality Health Index (AQHI) since 30 December 2013. At present, there are 3 roadside and 12 general stations reporting AQHI. Please refer to the [thematic page of AQHI](http://www.aqhi.gov.hk/en) for more information.

Past record of Air Pollution Index (Traditional Chinese) Apr 2010

• Resource ID: b8232457-88c0-4947-81f9-a48723c03f01
• Format: CSV
• Language: zh-Hant
• Updated: 2025-08-04T17:15:07.231014
• Original URL: http://www.aqhi.gov.hk/api_history/download/hourly/tc_chi/hr042010c.csv

Hourly Air Pollution Index (API) at different Air Quality Monitoring stations in Apr.2010.

The API is a simple way of describing air pollution levels. In Hong Kong, the API converts air pollution data from several types of pollutants into a value ranging from 0 to 500. Since API has been replaced by AQHI on 30 December 2013, please refer to the [archive of API webpage](http://www.aqhi.gov.hk/en/related-websites/air-pollution-index.html), if you want to have the information of API.

The above external links lead to a collection of CSV files containing past hourly API data from July 1999 to December 2013.

The Air Pollution Index has been replaced by the Air Quality Health Index (AQHI) since 30 December 2013. At present, there are 3 roadside and 12 general stations reporting AQHI. Please refer to the [thematic page of AQHI](http://www.aqhi.gov.hk/en) for more information.

Past record of Air Pollution Index (Traditional Chinese) Jun 2012

• Resource ID: b8fd69c3-359e-4995-9842-071eb69d116b
• Format: CSV
• Language: zh-Hant
• Updated: 2025-08-04T17:17:49.881556
• Original URL: http://www.aqhi.gov.hk/api_history/download/hourly/tc_chi/hr062012c.csv

Hourly Air Pollution Index (API) at different Air Quality Monitoring stations in Jun.2012.

The API is a simple way of describing air pollution levels. In Hong Kong, the API converts air pollution data from several types of pollutants into a value ranging from 0 to 500. Since API has been replaced by AQHI on 30 December 2013, please refer to the [archive of API webpage](http://www.aqhi.gov.hk/en/related-websites/air-pollution-index.html), if you want to have the information of API.

The above external links lead to a collection of CSV files containing past hourly API data from July 1999 to December 2013.

The Air Pollution Index has been replaced by the Air Quality Health Index (AQHI) since 30 December 2013. At present, there are 3 roadside and 12 general stations reporting AQHI. Please refer to the [thematic page of AQHI](http://www.aqhi.gov.hk/en) for more information.

Past record of Air Pollution Index (Traditional Chinese) Dec 2012

• Resource ID: b9f570de-4684-487f-ac0a-f93d6b1c57f2
• Format: CSV
• Language: zh-Hant
• Updated: 2025-08-04T17:18:30.917386
• Original URL: http://www.aqhi.gov.hk/api_history/download/hourly/tc_chi/hr122012c.csv

Hourly Air Pollution Index (API) at different Air Quality Monitoring stations in Dec.2012.

The API is a simple way of describing air pollution levels. In Hong Kong, the API converts air pollution data from several types of pollutants into a value ranging from 0 to 500. Since API has been replaced by AQHI on 30 December 2013, please refer to the [archive of API webpage](http://www.aqhi.gov.hk/en/related-websites/air-pollution-index.html), if you want to have the information of API.

The above external links lead to a collection of CSV files containing past hourly API data from July 1999 to December 2013.

The Air Pollution Index has been replaced by the Air Quality Health Index (AQHI) since 30 December 2013. At present, there are 3 roadside and 12 general stations reporting AQHI. Please refer to the [thematic page of AQHI](http://www.aqhi.gov.hk/en) for more information.

Past record of Air Pollution Index (Traditional Chinese) Feb 2012

• Resource ID: be8c6660-894b-4fa6-9c99-6eedcd78935e
• Format: CSV
• Language: zh-Hant
• Updated: 2025-08-04T17:17:23.073740
• Original URL: http://www.aqhi.gov.hk/api_history/download/hourly/tc_chi/hr022012c.csv

Hourly Air Pollution Index (API) at different Air Quality Monitoring stations in Feb.2012.

The API is a simple way of describing air pollution levels. In Hong Kong, the API converts air pollution data from several types of pollutants into a value ranging from 0 to 500. Since API has been replaced by AQHI on 30 December 2013, please refer to the [archive of API webpage](http://www.aqhi.gov.hk/en/related-websites/air-pollution-index.html), if you want to have the information of API.

The above external links lead to a collection of CSV files containing past hourly API data from July 1999 to December 2013.

The Air Pollution Index has been replaced by the Air Quality Health Index (AQHI) since 30 December 2013. At present, there are 3 roadside and 12 general stations reporting AQHI. Please refer to the [thematic page of AQHI](http://www.aqhi.gov.hk/en) for more information.

Past record of Air Pollution Index (Traditional Chinese) Nov 2004

• Resource ID: beb82f84-b477-4b3c-ba6f-47b5bf5e20c6
• Format: CSV
• Language: zh-Hant
• Updated: 2025-08-04T17:10:23.254034
• Original URL: http://www.aqhi.gov.hk/api_history/download/hourly/tc_chi/hr112004c.csv

Hourly Air Pollution Index (API) at different Air Quality Monitoring stations in Nov.2004.

The API is a simple way of describing air pollution levels. In Hong Kong, the API converts air pollution data from several types of pollutants into a value ranging from 0 to 500. Since API has been replaced by AQHI on 30 December 2013, please refer to the [archive of API webpage](http://www.aqhi.gov.hk/en/related-websites/air-pollution-index.html), if you want to have the information of API.

The above external links lead to a collection of CSV files containing past hourly API data from July 1999 to December 2013.

The Air Pollution Index has been replaced by the Air Quality Health Index (AQHI) since 30 December 2013. At present, there are 3 roadside and 12 general stations reporting AQHI. Please refer to the [thematic page of AQHI](http://www.aqhi.gov.hk/en) for more information.

Past record of Air Pollution Index (Traditional Chinese) Feb 2004

• Resource ID: c171b2d5-0de1-4777-98ca-cf54808c7c29
• Format: CSV
• Language: zh-Hant
• Updated: 2025-08-04T17:09:57.009707
• Original URL: http://www.aqhi.gov.hk/api_history/download/hourly/tc_chi/hr022004c.csv

Hourly Air Pollution Index (API) at different Air Quality Monitoring stations in Feb.2004.

The API is a simple way of describing air pollution levels. In Hong Kong, the API converts air pollution data from several types of pollutants into a value ranging from 0 to 500. Since API has been replaced by AQHI on 30 December 2013, please refer to the [archive of API webpage](http://www.aqhi.gov.hk/en/related-websites/air-pollution-index.html), if you want to have the information of API.

The above external links lead to a collection of CSV files containing past hourly API data from July 1999 to December 2013.

The Air Pollution Index has been replaced by the Air Quality Health Index (AQHI) since 30 December 2013. At present, there are 3 roadside and 12 general stations reporting AQHI. Please refer to the [thematic page of AQHI](http://www.aqhi.gov.hk/en) for more information.

Past record of Air Pollution Index (Traditional Chinese) Jun 2000

• Resource ID: c29f9bf0-16b6-4b5b-ba91-f9fe0cb3c7e7
• Format: CSV
• Language: zh-Hant
• Updated: 2025-08-04T17:08:32.156484
• Original URL: http://www.aqhi.gov.hk/api_history/download/hourly/tc_chi/hr062000c.csv

Hourly Air Pollution Index (API) at different Air Quality Monitoring stations in Jun.2000.

The API is a simple way of describing air pollution levels. In Hong Kong, the API converts air pollution data from several types of pollutants into a value ranging from 0 to 500. Since API has been replaced by AQHI on 30 December 2013, please refer to the [archive of API webpage](http://www.aqhi.gov.hk/en/related-websites/air-pollution-index.html), if you want to have the information of API.

The above external links lead to a collection of CSV files containing past hourly API data from July 1999 to December 2013.

The Air Pollution Index has been replaced by the Air Quality Health Index (AQHI) since 30 December 2013. At present, there are 3 roadside and 12 general stations reporting AQHI. Please refer to the [thematic page of AQHI](http://www.aqhi.gov.hk/en) for more information.

Past record of Air Pollution Index (Traditional Chinese) Feb 2013

• Resource ID: c2ba23b3-94a7-4c90-b062-8bd80bc4f2f1
• Format: CSV
• Language: zh-Hant
• Updated: 2025-08-04T17:18:44.514292
• Original URL: http://www.aqhi.gov.hk/api_history/download/hourly/tc_chi/hr022013c.csv

Hourly Air Pollution Index (API) at different Air Quality Monitoring stations in Feb.2013.

The API is a simple way of describing air pollution levels. In Hong Kong, the API converts air pollution data from several types of pollutants into a value ranging from 0 to 500. Since API has been replaced by AQHI on 30 December 2013, please refer to the [archive of API webpage](http://www.aqhi.gov.hk/en/related-websites/air-pollution-index.html), if you want to have the information of API.

The above external links lead to a collection of CSV files containing past hourly API data from July 1999 to December 2013.

The Air Pollution Index has been replaced by the Air Quality Health Index (AQHI) since 30 December 2013. At present, there are 3 roadside and 12 general stations reporting AQHI. Please refer to the [thematic page of AQHI](http://www.aqhi.gov.hk/en) for more information.

Past record of Air Pollution Index (Traditional Chinese) Oct 2007

• Resource ID: c2cd3fbc-dcee-47ca-8b7e-ca3c44818d01
• Format: CSV
• Language: zh-Hant
• Updated: 2025-08-04T17:12:35.223102
• Original URL: http://www.aqhi.gov.hk/api_history/download/hourly/tc_chi/hr102007c.csv

Hourly Air Pollution Index (API) at different Air Quality Monitoring stations in Oct.2007.

The API is a simple way of describing air pollution levels. In Hong Kong, the API converts air pollution data from several types of pollutants into a value ranging from 0 to 500. Since API has been replaced by AQHI on 30 December 2013, please refer to the [archive of API webpage](http://www.aqhi.gov.hk/en/related-websites/air-pollution-index.html), if you want to have the information of API.

The above external links lead to a collection of CSV files containing past hourly API data from July 1999 to December 2013.

The Air Pollution Index has been replaced by the Air Quality Health Index (AQHI) since 30 December 2013. At present, there are 3 roadside and 12 general stations reporting AQHI. Please refer to the [thematic page of AQHI](http://www.aqhi.gov.hk/en) for more information.

Past record of Air Pollution Index (Traditional Chinese) Jul 2001

• Resource ID: c45d9591-ac91-4d82-97e2-664d5cc2a408
• Format: CSV
• Language: zh-Hant
• Updated: 2025-08-04T17:08:50.020389
• Original URL: http://www.aqhi.gov.hk/api_history/download/hourly/tc_chi/hr072001c.csv

Hourly Air Pollution Index (API) at different Air Quality Monitoring stations in Jul.2001.

The API is a simple way of describing air pollution levels. In Hong Kong, the API converts air pollution data from several types of pollutants into a value ranging from 0 to 500. Since API has been replaced by AQHI on 30 December 2013, please refer to the [archive of API webpage](http://www.aqhi.gov.hk/en/related-websites/air-pollution-index.html), if you want to have the information of API.

The above external links lead to a collection of CSV files containing past hourly API data from July 1999 to December 2013.

The Air Pollution Index has been replaced by the Air Quality Health Index (AQHI) since 30 December 2013. At present, there are 3 roadside and 12 general stations reporting AQHI. Please refer to the [thematic page of AQHI](http://www.aqhi.gov.hk/en) for more information.

Past record of Air Pollution Index (Traditional Chinese) May 2007

• Resource ID: c4971bcf-5d37-4b1d-aaf9-b64bc197b5ee
• Format: CSV
• Language: zh-Hant
• Updated: 2025-08-04T17:12:13.178534
• Original URL: http://www.aqhi.gov.hk/api_history/download/hourly/tc_chi/hr052007c.csv

Hourly Air Pollution Index (API) at different Air Quality Monitoring stations in May.2007.

The API is a simple way of describing air pollution levels. In Hong Kong, the API converts air pollution data from several types of pollutants into a value ranging from 0 to 500. Since API has been replaced by AQHI on 30 December 2013, please refer to the [archive of API webpage](http://www.aqhi.gov.hk/en/related-websites/air-pollution-index.html), if you want to have the information of API.

The above external links lead to a collection of CSV files containing past hourly API data from July 1999 to December 2013.

The Air Pollution Index has been replaced by the Air Quality Health Index (AQHI) since 30 December 2013. At present, there are 3 roadside and 12 general stations reporting AQHI. Please refer to the [thematic page of AQHI](http://www.aqhi.gov.hk/en) for more information.

Past record of Air Pollution Index (Traditional Chinese) Jan 2009

• Resource ID: c7d337e5-9575-4455-a944-ab2ce5bc738e
• Format: CSV
• Language: zh-Hant
• Updated: 2025-08-04T17:13:46.292675
• Original URL: http://www.aqhi.gov.hk/api_history/download/hourly/tc_chi/hr012009c.csv

Hourly Air Pollution Index (API) at different Air Quality Monitoring stations in Jan.2009.

The API is a simple way of describing air pollution levels. In Hong Kong, the API converts air pollution data from several types of pollutants into a value ranging from 0 to 500. Since API has been replaced by AQHI on 30 December 2013, please refer to the [archive of API webpage](http://www.aqhi.gov.hk/en/related-websites/air-pollution-index.html), if you want to have the information of API.

The above external links lead to a collection of CSV files containing past hourly API data from July 1999 to December 2013.

The Air Pollution Index has been replaced by the Air Quality Health Index (AQHI) since 30 December 2013. At present, there are 3 roadside and 12 general stations reporting AQHI. Please refer to the [thematic page of AQHI](http://www.aqhi.gov.hk/en) for more information.

Past record of Air Pollution Index (Traditional Chinese) Apr 2003

• Resource ID: c86d0a23-ca16-408a-ae65-3c5f80ef16d1
• Format: CSV
• Language: zh-Hant
• Updated: 2025-08-04T17:09:32.426388
• Original URL: http://www.aqhi.gov.hk/api_history/download/hourly/tc_chi/hr042003c.csv

Hourly Air Pollution Index (API) at different Air Quality Monitoring stations in Apr.2003.

The API is a simple way of describing air pollution levels. In Hong Kong, the API converts air pollution data from several types of pollutants into a value ranging from 0 to 500. Since API has been replaced by AQHI on 30 December 2013, please refer to the [archive of API webpage](http://www.aqhi.gov.hk/en/related-websites/air-pollution-index.html), if you want to have the information of API.

The above external links lead to a collection of CSV files containing past hourly API data from July 1999 to December 2013.

The Air Pollution Index has been replaced by the Air Quality Health Index (AQHI) since 30 December 2013. At present, there are 3 roadside and 12 general stations reporting AQHI. Please refer to the [thematic page of AQHI](http://www.aqhi.gov.hk/en) for more information.

Past record of Air Pollution Index (Traditional Chinese) Jul 2000

• Resource ID: cb759ca8-389b-4a4e-bd39-1184f71c7cba
• Format: CSV
• Language: zh-Hant
• Updated: 2025-08-04T17:08:33.281830
• Original URL: http://www.aqhi.gov.hk/api_history/download/hourly/tc_chi/hr072000c.csv

Hourly Air Pollution Index (API) at different Air Quality Monitoring stations in Jul.2000.

The API is a simple way of describing air pollution levels. In Hong Kong, the API converts air pollution data from several types of pollutants into a value ranging from 0 to 500. Since API has been replaced by AQHI on 30 December 2013, please refer to the [archive of API webpage](http://www.aqhi.gov.hk/en/related-websites/air-pollution-index.html), if you want to have the information of API.

The above external links lead to a collection of CSV files containing past hourly API data from July 1999 to December 2013.

The Air Pollution Index has been replaced by the Air Quality Health Index (AQHI) since 30 December 2013. At present, there are 3 roadside and 12 general stations reporting AQHI. Please refer to the [thematic page of AQHI](http://www.aqhi.gov.hk/en) for more information.

Past record of Air Pollution Index (Traditional Chinese) Sep 2011

• Resource ID: cd16ae8c-6794-43ad-a6ef-34f34ae3a11c
• Format: CSV
• Language: zh-Hant
• Updated: 2025-08-04T17:16:50.650024
• Original URL: http://www.aqhi.gov.hk/api_history/download/hourly/tc_chi/hr092011c.csv

Hourly Air Pollution Index (API) at different Air Quality Monitoring stations in Sep.2011.

The API is a simple way of describing air pollution levels. In Hong Kong, the API converts air pollution data from several types of pollutants into a value ranging from 0 to 500. Since API has been replaced by AQHI on 30 December 2013, please refer to the [archive of API webpage](http://www.aqhi.gov.hk/en/related-websites/air-pollution-index.html), if you want to have the information of API.

The above external links lead to a collection of CSV files containing past hourly API data from July 1999 to December 2013.

The Air Pollution Index has been replaced by the Air Quality Health Index (AQHI) since 30 December 2013. At present, there are 3 roadside and 12 general stations reporting AQHI. Please refer to the [thematic page of AQHI](http://www.aqhi.gov.hk/en) for more information.

Past record of Air Pollution Index (Traditional Chinese) Apr 2000

• Resource ID: ce13e964-56d2-4379-967f-bb8032761962
• Format: CSV
• Language: zh-Hant
• Updated: 2025-08-04T17:08:29.827897
• Original URL: http://www.aqhi.gov.hk/api_history/download/hourly/tc_chi/hr042000c.csv

Hourly Air Pollution Index (API) at different Air Quality Monitoring stations in Apr.2000.

The API is a simple way of describing air pollution levels. In Hong Kong, the API converts air pollution data from several types of pollutants into a value ranging from 0 to 500. Since API has been replaced by AQHI on 30 December 2013, please refer to the [archive of API webpage](http://www.aqhi.gov.hk/en/related-websites/air-pollution-index.html), if you want to have the information of API.

The above external links lead to a collection of CSV files containing past hourly API data from July 1999 to December 2013.

The Air Pollution Index has been replaced by the Air Quality Health Index (AQHI) since 30 December 2013. At present, there are 3 roadside and 12 general stations reporting AQHI. Please refer to the [thematic page of AQHI](http://www.aqhi.gov.hk/en) for more information.

Past record of Air Pollution Index (Traditional Chinese) Jun 2005

• Resource ID: ce38f22a-76ad-4872-9063-6b2e464e5686
• Format: CSV
• Language: zh-Hant
• Updated: 2025-08-04T17:10:45.870583
• Original URL: http://www.aqhi.gov.hk/api_history/download/hourly/tc_chi/hr062005c.csv

Hourly Air Pollution Index (API) at different Air Quality Monitoring stations in Jun.2005.

The API is a simple way of describing air pollution levels. In Hong Kong, the API converts air pollution data from several types of pollutants into a value ranging from 0 to 500. Since API has been replaced by AQHI on 30 December 2013, please refer to the [archive of API webpage](http://www.aqhi.gov.hk/en/related-websites/air-pollution-index.html), if you want to have the information of API.

The above external links lead to a collection of CSV files containing past hourly API data from July 1999 to December 2013.

The Air Pollution Index has been replaced by the Air Quality Health Index (AQHI) since 30 December 2013. At present, there are 3 roadside and 12 general stations reporting AQHI. Please refer to the [thematic page of AQHI](http://www.aqhi.gov.hk/en) for more information.

Past record of Air Pollution Index (Traditional Chinese) Oct 2001

• Resource ID: ce661141-2d2b-4a91-b18b-a8cbd9ec80d1
• Format: CSV
• Language: zh-Hant
• Updated: 2025-08-04T17:08:55.127569
• Original URL: http://www.aqhi.gov.hk/api_history/download/hourly/tc_chi/hr102001c.csv

Hourly Air Pollution Index (API) at different Air Quality Monitoring stations in Oct.2001.

The API is a simple way of describing air pollution levels. In Hong Kong, the API converts air pollution data from several types of pollutants into a value ranging from 0 to 500. Since API has been replaced by AQHI on 30 December 2013, please refer to the [archive of API webpage](http://www.aqhi.gov.hk/en/related-websites/air-pollution-index.html), if you want to have the information of API.

The above external links lead to a collection of CSV files containing past hourly API data from July 1999 to December 2013.

The Air Pollution Index has been replaced by the Air Quality Health Index (AQHI) since 30 December 2013. At present, there are 3 roadside and 12 general stations reporting AQHI. Please refer to the [thematic page of AQHI](http://www.aqhi.gov.hk/en) for more information.

Past record of Air Pollution Index (Traditional Chinese) Jun 2001

• Resource ID: cfd8c720-a6a2-4961-bc61-9489194c6c64
• Format: CSV
• Language: zh-Hant
• Updated: 2025-08-04T17:08:48.454902
• Original URL: http://www.aqhi.gov.hk/api_history/download/hourly/tc_chi/hr062001c.csv

Hourly Air Pollution Index (API) at different Air Quality Monitoring stations in Jun.2001.

The API is a simple way of describing air pollution levels. In Hong Kong, the API converts air pollution data from several types of pollutants into a value ranging from 0 to 500. Since API has been replaced by AQHI on 30 December 2013, please refer to the [archive of API webpage](http://www.aqhi.gov.hk/en/related-websites/air-pollution-index.html), if you want to have the information of API.

The above external links lead to a collection of CSV files containing past hourly API data from July 1999 to December 2013.

The Air Pollution Index has been replaced by the Air Quality Health Index (AQHI) since 30 December 2013. At present, there are 3 roadside and 12 general stations reporting AQHI. Please refer to the [thematic page of AQHI](http://www.aqhi.gov.hk/en) for more information.

Past record of Air Pollution Index (Traditional Chinese) Jul 2005

• Resource ID: d0136f7d-5d1d-4b6b-9439-fc2e5f6b3c7b
• Format: CSV
• Language: zh-Hant
• Updated: 2025-08-04T17:10:49.162236
• Original URL: http://www.aqhi.gov.hk/api_history/download/hourly/tc_chi/hr072005c.csv

Hourly Air Pollution Index (API) at different Air Quality Monitoring stations in Jul.2005.

The API is a simple way of describing air pollution levels. In Hong Kong, the API converts air pollution data from several types of pollutants into a value ranging from 0 to 500. Since API has been replaced by AQHI on 30 December 2013, please refer to the [archive of API webpage](http://www.aqhi.gov.hk/en/related-websites/air-pollution-index.html), if you want to have the information of API.

The above external links lead to a collection of CSV files containing past hourly API data from July 1999 to December 2013.

The Air Pollution Index has been replaced by the Air Quality Health Index (AQHI) since 30 December 2013. At present, there are 3 roadside and 12 general stations reporting AQHI. Please refer to the [thematic page of AQHI](http://www.aqhi.gov.hk/en) for more information.

Past record of Air Pollution Index (Traditional Chinese) Dec 2013

• Resource ID: d194efa1-80f2-4186-95b0-1ba0aa168d00
• Format: CSV
• Language: zh-Hant
• Updated: 2025-08-04T17:19:55.710602
• Original URL: http://www.aqhi.gov.hk/api_history/download/hourly/tc_chi/hr122013c.csv

Hourly Air Pollution Index (API) at different Air Quality Monitoring stations in Dec.2013.

The API is a simple way of describing air pollution levels. In Hong Kong, the API converts air pollution data from several types of pollutants into a value ranging from 0 to 500. Since API has been replaced by AQHI on 30 December 2013, please refer to the [archive of API webpage](http://www.aqhi.gov.hk/en/related-websites/air-pollution-index.html), if you want to have the information of API.

The above external links lead to a collection of CSV files containing past hourly API data from July 1999 to December 2013.

The Air Pollution Index has been replaced by the Air Quality Health Index (AQHI) since 30 December 2013. At present, there are 3 roadside and 12 general stations reporting AQHI. Please refer to the [thematic page of AQHI](http://www.aqhi.gov.hk/en) for more information.

Past record of Air Pollution Index (Traditional Chinese) Oct 2004

• Resource ID: d42a6194-7197-4d9a-8a8b-ae3ac8df39c7
• Format: CSV
• Language: zh-Hant
• Updated: 2025-08-04T17:10:20.207717
• Original URL: http://www.aqhi.gov.hk/api_history/download/hourly/tc_chi/hr102004c.csv

Hourly Air Pollution Index (API) at different Air Quality Monitoring stations in Oct.2004.

The API is a simple way of describing air pollution levels. In Hong Kong, the API converts air pollution data from several types of pollutants into a value ranging from 0 to 500. Since API has been replaced by AQHI on 30 December 2013, please refer to the [archive of API webpage](http://www.aqhi.gov.hk/en/related-websites/air-pollution-index.html), if you want to have the information of API.

The above external links lead to a collection of CSV files containing past hourly API data from July 1999 to December 2013.

The Air Pollution Index has been replaced by the Air Quality Health Index (AQHI) since 30 December 2013. At present, there are 3 roadside and 12 general stations reporting AQHI. Please refer to the [thematic page of AQHI](http://www.aqhi.gov.hk/en) for more information.

Past record of Air Pollution Index (Traditional Chinese) Oct 2008

• Resource ID: d4339db2-3c7e-48ea-9874-0a91f591e303
• Format: CSV
• Language: zh-Hant
• Updated: 2025-08-04T17:13:31.092400
• Original URL: http://www.aqhi.gov.hk/api_history/download/hourly/tc_chi/hr102008c.csv

Hourly Air Pollution Index (API) at different Air Quality Monitoring stations in Oct.2008.

The API is a simple way of describing air pollution levels. In Hong Kong, the API converts air pollution data from several types of pollutants into a value ranging from 0 to 500. Since API has been replaced by AQHI on 30 December 2013, please refer to the [archive of API webpage](http://www.aqhi.gov.hk/en/related-websites/air-pollution-index.html), if you want to have the information of API.

The above external links lead to a collection of CSV files containing past hourly API data from July 1999 to December 2013.

The Air Pollution Index has been replaced by the Air Quality Health Index (AQHI) since 30 December 2013. At present, there are 3 roadside and 12 general stations reporting AQHI. Please refer to the [thematic page of AQHI](http://www.aqhi.gov.hk/en) for more information.

Past record of Air Pollution Index (Traditional Chinese) Aug 2000

• Resource ID: d602a131-f222-4265-946e-7149f5e4c490
• Format: CSV
• Language: zh-Hant
• Updated: 2025-08-04T17:08:34.453909
• Original URL: http://www.aqhi.gov.hk/api_history/download/hourly/tc_chi/hr082000c.csv

Hourly Air Pollution Index (API) at different Air Quality Monitoring stations in Aug.2000.

The API is a simple way of describing air pollution levels. In Hong Kong, the API converts air pollution data from several types of pollutants into a value ranging from 0 to 500. Since API has been replaced by AQHI on 30 December 2013, please refer to the [archive of API webpage](http://www.aqhi.gov.hk/en/related-websites/air-pollution-index.html), if you want to have the information of API.

The above external links lead to a collection of CSV files containing past hourly API data from July 1999 to December 2013.

The Air Pollution Index has been replaced by the Air Quality Health Index (AQHI) since 30 December 2013. At present, there are 3 roadside and 12 general stations reporting AQHI. Please refer to the [thematic page of AQHI](http://www.aqhi.gov.hk/en) for more information.

Past record of Air Pollution Index (Traditional Chinese) Nov 2007

• Resource ID: d69ff2aa-d2a3-44ba-b068-8208c24cafca
• Format: CSV
• Language: zh-Hant
• Updated: 2025-08-04T17:12:39.670650
• Original URL: http://www.aqhi.gov.hk/api_history/download/hourly/tc_chi/hr112007c.csv

Hourly Air Pollution Index (API) at different Air Quality Monitoring stations in Nov.2007.

The API is a simple way of describing air pollution levels. In Hong Kong, the API converts air pollution data from several types of pollutants into a value ranging from 0 to 500. Since API has been replaced by AQHI on 30 December 2013, please refer to the [archive of API webpage](http://www.aqhi.gov.hk/en/related-websites/air-pollution-index.html), if you want to have the information of API.

The above external links lead to a collection of CSV files containing past hourly API data from July 1999 to December 2013.

The Air Pollution Index has been replaced by the Air Quality Health Index (AQHI) since 30 December 2013. At present, there are 3 roadside and 12 general stations reporting AQHI. Please refer to the [thematic page of AQHI](http://www.aqhi.gov.hk/en) for more information.

Past record of Air Pollution Index (Traditional Chinese) Oct 2005

• Resource ID: d6bf0af4-c040-4bdd-ad67-9bfae01c7685
• Format: CSV
• Language: zh-Hant
• Updated: 2025-08-04T17:10:59.348437
• Original URL: http://www.aqhi.gov.hk/api_history/download/hourly/tc_chi/hr102005c.csv

Hourly Air Pollution Index (API) at different Air Quality Monitoring stations in Oct.2005.

The API is a simple way of describing air pollution levels. In Hong Kong, the API converts air pollution data from several types of pollutants into a value ranging from 0 to 500. Since API has been replaced by AQHI on 30 December 2013, please refer to the [archive of API webpage](http://www.aqhi.gov.hk/en/related-websites/air-pollution-index.html), if you want to have the information of API.

The above external links lead to a collection of CSV files containing past hourly API data from July 1999 to December 2013.

The Air Pollution Index has been replaced by the Air Quality Health Index (AQHI) since 30 December 2013. At present, there are 3 roadside and 12 general stations reporting AQHI. Please refer to the [thematic page of AQHI](http://www.aqhi.gov.hk/en) for more information.

Past record of Air Pollution Index (Traditional Chinese) Dec 2001

• Resource ID: d901b579-8f52-4a55-96f3-3ab9d58c3d3e
• Format: CSV
• Language: zh-Hant
• Updated: 2025-08-04T17:08:58.743770
• Original URL: http://www.aqhi.gov.hk/api_history/download/hourly/tc_chi/hr122001c.csv

Hourly Air Pollution Index (API) at different Air Quality Monitoring stations in Dec.2001.

The API is a simple way of describing air pollution levels. In Hong Kong, the API converts air pollution data from several types of pollutants into a value ranging from 0 to 500. Since API has been replaced by AQHI on 30 December 2013, please refer to the [archive of API webpage](http://www.aqhi.gov.hk/en/related-websites/air-pollution-index.html), if you want to have the information of API.

The above external links lead to a collection of CSV files containing past hourly API data from July 1999 to December 2013.

The Air Pollution Index has been replaced by the Air Quality Health Index (AQHI) since 30 December 2013. At present, there are 3 roadside and 12 general stations reporting AQHI. Please refer to the [thematic page of AQHI](http://www.aqhi.gov.hk/en) for more information.

Past record of Air Pollution Index (Traditional Chinese) Jul 2012

• Resource ID: daaffc8a-504a-4b93-912b-edd1117208e0
• Format: CSV
• Language: zh-Hant
• Updated: 2025-08-04T17:17:56.557378
• Original URL: http://www.aqhi.gov.hk/api_history/download/hourly/tc_chi/hr072012c.csv

Hourly Air Pollution Index (API) at different Air Quality Monitoring stations in Jul.2012.

The API is a simple way of describing air pollution levels. In Hong Kong, the API converts air pollution data from several types of pollutants into a value ranging from 0 to 500. Since API has been replaced by AQHI on 30 December 2013, please refer to the [archive of API webpage](http://www.aqhi.gov.hk/en/related-websites/air-pollution-index.html), if you want to have the information of API.

The above external links lead to a collection of CSV files containing past hourly API data from July 1999 to December 2013.

The Air Pollution Index has been replaced by the Air Quality Health Index (AQHI) since 30 December 2013. At present, there are 3 roadside and 12 general stations reporting AQHI. Please refer to the [thematic page of AQHI](http://www.aqhi.gov.hk/en) for more information.

Past record of Air Pollution Index (Traditional Chinese) Mar 2010

• Resource ID: daba2029-5681-4354-87e4-6f78e88eab7e
• Format: CSV
• Language: zh-Hant
• Updated: 2025-08-04T17:15:01.415495
• Original URL: http://www.aqhi.gov.hk/api_history/download/hourly/tc_chi/hr032010c.csv

Hourly Air Pollution Index (API) at different Air Quality Monitoring stations in Mar.2010.

The API is a simple way of describing air pollution levels. In Hong Kong, the API converts air pollution data from several types of pollutants into a value ranging from 0 to 500. Since API has been replaced by AQHI on 30 December 2013, please refer to the [archive of API webpage](http://www.aqhi.gov.hk/en/related-websites/air-pollution-index.html), if you want to have the information of API.

The above external links lead to a collection of CSV files containing past hourly API data from July 1999 to December 2013.

The Air Pollution Index has been replaced by the Air Quality Health Index (AQHI) since 30 December 2013. At present, there are 3 roadside and 12 general stations reporting AQHI. Please refer to the [thematic page of AQHI](http://www.aqhi.gov.hk/en) for more information.

Past record of Air Pollution Index (Traditional Chinese) Dec 2003

• Resource ID: db0c8030-89b5-43e0-897e-086aaadafb0a
• Format: CSV
• Language: zh-Hant
• Updated: 2025-08-04T17:09:51.691597
• Original URL: http://www.aqhi.gov.hk/api_history/download/hourly/tc_chi/hr122003c.csv

Hourly Air Pollution Index (API) at different Air Quality Monitoring stations in Dec.2003.

The API is a simple way of describing air pollution levels. In Hong Kong, the API converts air pollution data from several types of pollutants into a value ranging from 0 to 500. Since API has been replaced by AQHI on 30 December 2013, please refer to the [archive of API webpage](http://www.aqhi.gov.hk/en/related-websites/air-pollution-index.html), if you want to have the information of API.

The above external links lead to a collection of CSV files containing past hourly API data from July 1999 to December 2013.

The Air Pollution Index has been replaced by the Air Quality Health Index (AQHI) since 30 December 2013. At present, there are 3 roadside and 12 general stations reporting AQHI. Please refer to the [thematic page of AQHI](http://www.aqhi.gov.hk/en) for more information.

Past record of Air Pollution Index (Traditional Chinese) Dec 2004

• Resource ID: dc79c0bb-9c12-4a9c-9f05-fb187cd0b93d
• Format: CSV
• Language: zh-Hant
• Updated: 2025-08-04T17:10:26.339962
• Original URL: http://www.aqhi.gov.hk/api_history/download/hourly/tc_chi/hr122004c.csv

Hourly Air Pollution Index (API) at different Air Quality Monitoring stations in Dec.2004.

The API is a simple way of describing air pollution levels. In Hong Kong, the API converts air pollution data from several types of pollutants into a value ranging from 0 to 500. Since API has been replaced by AQHI on 30 December 2013, please refer to the [archive of API webpage](http://www.aqhi.gov.hk/en/related-websites/air-pollution-index.html), if you want to have the information of API.

The above external links lead to a collection of CSV files containing past hourly API data from July 1999 to December 2013.

The Air Pollution Index has been replaced by the Air Quality Health Index (AQHI) since 30 December 2013. At present, there are 3 roadside and 12 general stations reporting AQHI. Please refer to the [thematic page of AQHI](http://www.aqhi.gov.hk/en) for more information.

Past record of Air Pollution Index (Traditional Chinese) Feb 2008

• Resource ID: dec778c1-26a3-4e3f-a22b-f5f71d0f355f
• Format: CSV
• Language: zh-Hant
• Updated: 2025-08-04T17:12:52.915700
• Original URL: http://www.aqhi.gov.hk/api_history/download/hourly/tc_chi/hr022008c.csv

Hourly Air Pollution Index (API) at different Air Quality Monitoring stations in Feb.2008.

The API is a simple way of describing air pollution levels. In Hong Kong, the API converts air pollution data from several types of pollutants into a value ranging from 0 to 500. Since API has been replaced by AQHI on 30 December 2013, please refer to the [archive of API webpage](http://www.aqhi.gov.hk/en/related-websites/air-pollution-index.html), if you want to have the information of API.

The above external links lead to a collection of CSV files containing past hourly API data from July 1999 to December 2013.

The Air Pollution Index has been replaced by the Air Quality Health Index (AQHI) since 30 December 2013. At present, there are 3 roadside and 12 general stations reporting AQHI. Please refer to the [thematic page of AQHI](http://www.aqhi.gov.hk/en) for more information.

Past record of Air Pollution Index (Traditional Chinese) Jul 1999

• Resource ID: e15ca8c2-1d1c-4e24-83b9-2aa53716ce49
• Format: CSV
• Language: zh-Hant
• Updated: 2025-08-04T17:08:18.403539
• Original URL: http://www.aqhi.gov.hk/api_history/download/hourly/tc_chi/hr071999c.csv

Hourly Air Pollution Index (API) at different Air Quality Monitoring stations in Jul.1999.

The API is a simple way of describing air pollution levels. In Hong Kong, the API converts air pollution data from several types of pollutants into a value ranging from 0 to 500. Since API has been replaced by AQHI on 30 December 2013, please refer to the [archive of API webpage](http://www.aqhi.gov.hk/en/related-websites/air-pollution-index.html), if you want to have the information of API.

The above external links lead to a collection of CSV files containing past hourly API data from July 1999 to December 2013.

The Air Pollution Index has been replaced by the Air Quality Health Index (AQHI) since 30 December 2013. At present, there are 3 roadside and 12 general stations reporting AQHI. Please refer to the [thematic page of AQHI](http://www.aqhi.gov.hk/en) for more information.

Past record of Air Pollution Index (Traditional Chinese) Nov 1999

• Resource ID: e23225fe-fa84-4a70-ba43-b775527caf8b
• Format: CSV
• Language: zh-Hant
• Updated: 2025-08-04T17:08:25.110680
• Original URL: http://www.aqhi.gov.hk/api_history/download/hourly/tc_chi/hr111999c.csv

Hourly Air Pollution Index (API) at different Air Quality Monitoring stations in Nov.1999.

The API is a simple way of describing air pollution levels. In Hong Kong, the API converts air pollution data from several types of pollutants into a value ranging from 0 to 500. Since API has been replaced by AQHI on 30 December 2013, please refer to the [archive of API webpage](http://www.aqhi.gov.hk/en/related-websites/air-pollution-index.html), if you want to have the information of API.

The above external links lead to a collection of CSV files containing past hourly API data from July 1999 to December 2013.

The Air Pollution Index has been replaced by the Air Quality Health Index (AQHI) since 30 December 2013. At present, there are 3 roadside and 12 general stations reporting AQHI. Please refer to the [thematic page of AQHI](http://www.aqhi.gov.hk/en) for more information.

Past record of Air Pollution Index (Traditional Chinese) Sep 2000

• Resource ID: e33dd883-29b2-4394-97d9-c0da871719a7
• Format: CSV
• Language: zh-Hant
• Updated: 2025-08-04T17:08:35.744895
• Original URL: http://www.aqhi.gov.hk/api_history/download/hourly/tc_chi/hr092000c.csv

Hourly Air Pollution Index (API) at different Air Quality Monitoring stations in Sep.2000.

The API is a simple way of describing air pollution levels. In Hong Kong, the API converts air pollution data from several types of pollutants into a value ranging from 0 to 500. Since API has been replaced by AQHI on 30 December 2013, please refer to the [archive of API webpage](http://www.aqhi.gov.hk/en/related-websites/air-pollution-index.html), if you want to have the information of API.

The above external links lead to a collection of CSV files containing past hourly API data from July 1999 to December 2013.

The Air Pollution Index has been replaced by the Air Quality Health Index (AQHI) since 30 December 2013. At present, there are 3 roadside and 12 general stations reporting AQHI. Please refer to the [thematic page of AQHI](http://www.aqhi.gov.hk/en) for more information.

Past record of Air Pollution Index (Traditional Chinese) Nov 2008

• Resource ID: e506cea6-b163-40ee-867e-e545ab0c5ef1
• Format: CSV
• Language: zh-Hant
• Updated: 2025-08-04T17:13:35.981504
• Original URL: http://www.aqhi.gov.hk/api_history/download/hourly/tc_chi/hr112008c.csv

Hourly Air Pollution Index (API) at different Air Quality Monitoring stations in Nov.2008.

The API is a simple way of describing air pollution levels. In Hong Kong, the API converts air pollution data from several types of pollutants into a value ranging from 0 to 500. Since API has been replaced by AQHI on 30 December 2013, please refer to the [archive of API webpage](http://www.aqhi.gov.hk/en/related-websites/air-pollution-index.html), if you want to have the information of API.

The above external links lead to a collection of CSV files containing past hourly API data from July 1999 to December 2013.

The Air Pollution Index has been replaced by the Air Quality Health Index (AQHI) since 30 December 2013. At present, there are 3 roadside and 12 general stations reporting AQHI. Please refer to the [thematic page of AQHI](http://www.aqhi.gov.hk/en) for more information.

Past record of Air Pollution Index (Traditional Chinese) May 2004

• Resource ID: e5ba5d6e-9b5a-4cb3-9ffd-8c3a1f00a0fe
• Format: CSV
• Language: zh-Hant
• Updated: 2025-08-04T17:10:05.571192
• Original URL: http://www.aqhi.gov.hk/api_history/download/hourly/tc_chi/hr052004c.csv

Hourly Air Pollution Index (API) at different Air Quality Monitoring stations in May.2004.

The API is a simple way of describing air pollution levels. In Hong Kong, the API converts air pollution data from several types of pollutants into a value ranging from 0 to 500. Since API has been replaced by AQHI on 30 December 2013, please refer to the [archive of API webpage](http://www.aqhi.gov.hk/en/related-websites/air-pollution-index.html), if you want to have the information of API.

The above external links lead to a collection of CSV files containing past hourly API data from July 1999 to December 2013.

The Air Pollution Index has been replaced by the Air Quality Health Index (AQHI) since 30 December 2013. At present, there are 3 roadside and 12 general stations reporting AQHI. Please refer to the [thematic page of AQHI](http://www.aqhi.gov.hk/en) for more information.

Past record of Air Pollution Index (Traditional Chinese) Mar 2013

• Resource ID: e5e0dcee-cfff-4136-a03f-6ef1dfa43b2f
• Format: CSV
• Language: zh-Hant
• Updated: 2025-08-04T17:18:51.274369
• Original URL: http://www.aqhi.gov.hk/api_history/download/hourly/tc_chi/hr032013c.csv

Hourly Air Pollution Index (API) at different Air Quality Monitoring stations in Mar.2013.

The API is a simple way of describing air pollution levels. In Hong Kong, the API converts air pollution data from several types of pollutants into a value ranging from 0 to 500. Since API has been replaced by AQHI on 30 December 2013, please refer to the [archive of API webpage](http://www.aqhi.gov.hk/en/related-websites/air-pollution-index.html), if you want to have the information of API.

The above external links lead to a collection of CSV files containing past hourly API data from July 1999 to December 2013.

The Air Pollution Index has been replaced by the Air Quality Health Index (AQHI) since 30 December 2013. At present, there are 3 roadside and 12 general stations reporting AQHI. Please refer to the [thematic page of AQHI](http://www.aqhi.gov.hk/en) for more information.

Past record of Air Pollution Index (Traditional Chinese) Oct 1999

• Resource ID: e7088da9-96c3-42cc-b303-e48d113ddcb7
• Format: CSV
• Language: zh-Hant
• Updated: 2025-08-04T17:08:24.318790
• Original URL: http://www.aqhi.gov.hk/api_history/download/hourly/tc_chi/hr101999c.csv

Hourly Air Pollution Index (API) at different Air Quality Monitoring stations in Oct.1999.

The API is a simple way of describing air pollution levels. In Hong Kong, the API converts air pollution data from several types of pollutants into a value ranging from 0 to 500. Since API has been replaced by AQHI on 30 December 2013, please refer to the [archive of API webpage](http://www.aqhi.gov.hk/en/related-websites/air-pollution-index.html), if you want to have the information of API.

The above external links lead to a collection of CSV files containing past hourly API data from July 1999 to December 2013.

The Air Pollution Index has been replaced by the Air Quality Health Index (AQHI) since 30 December 2013. At present, there are 3 roadside and 12 general stations reporting AQHI. Please refer to the [thematic page of AQHI](http://www.aqhi.gov.hk/en) for more information.

Past record of Air Pollution Index (Traditional Chinese) May 2009

• Resource ID: e8c373c7-a728-4aca-8d51-8b8b4141dd69
• Format: CSV
• Language: zh-Hant
• Updated: 2025-08-04T17:14:07.549457
• Original URL: http://www.aqhi.gov.hk/api_history/download/hourly/tc_chi/hr052009c.csv

Hourly Air Pollution Index (API) at different Air Quality Monitoring stations in May.2009.

The API is a simple way of describing air pollution levels. In Hong Kong, the API converts air pollution data from several types of pollutants into a value ranging from 0 to 500. Since API has been replaced by AQHI on 30 December 2013, please refer to the [archive of API webpage](http://www.aqhi.gov.hk/en/related-websites/air-pollution-index.html), if you want to have the information of API.

The above external links lead to a collection of CSV files containing past hourly API data from July 1999 to December 2013.

The Air Pollution Index has been replaced by the Air Quality Health Index (AQHI) since 30 December 2013. At present, there are 3 roadside and 12 general stations reporting AQHI. Please refer to the [thematic page of AQHI](http://www.aqhi.gov.hk/en) for more information.

Past record of Air Pollution Index (Traditional Chinese) Nov 2002

• Resource ID: e8ca6d04-6d3d-4b55-bc44-6c7604f11a9e
• Format: CSV
• Language: zh-Hant
• Updated: 2025-08-04T17:09:21.486412
• Original URL: http://www.aqhi.gov.hk/api_history/download/hourly/tc_chi/hr112002c.csv

Hourly Air Pollution Index (API) at different Air Quality Monitoring stations in Nov.2002.

The API is a simple way of describing air pollution levels. In Hong Kong, the API converts air pollution data from several types of pollutants into a value ranging from 0 to 500. Since API has been replaced by AQHI on 30 December 2013, please refer to the [archive of API webpage](http://www.aqhi.gov.hk/en/related-websites/air-pollution-index.html), if you want to have the information of API.

The above external links lead to a collection of CSV files containing past hourly API data from July 1999 to December 2013.

The Air Pollution Index has been replaced by the Air Quality Health Index (AQHI) since 30 December 2013. At present, there are 3 roadside and 12 general stations reporting AQHI. Please refer to the [thematic page of AQHI](http://www.aqhi.gov.hk/en) for more information.

Past record of Air Pollution Index (Traditional Chinese) May 2010

• Resource ID: e8cfeac4-fe55-4539-a08d-8d41968915da
• Format: CSV
• Language: zh-Hant
• Updated: 2025-08-04T17:15:13.034231
• Original URL: http://www.aqhi.gov.hk/api_history/download/hourly/tc_chi/hr052010c.csv

Hourly Air Pollution Index (API) at different Air Quality Monitoring stations in May.2010.

The API is a simple way of describing air pollution levels. In Hong Kong, the API converts air pollution data from several types of pollutants into a value ranging from 0 to 500. Since API has been replaced by AQHI on 30 December 2013, please refer to the [archive of API webpage](http://www.aqhi.gov.hk/en/related-websites/air-pollution-index.html), if you want to have the information of API.

The above external links lead to a collection of CSV files containing past hourly API data from July 1999 to December 2013.

The Air Pollution Index has been replaced by the Air Quality Health Index (AQHI) since 30 December 2013. At present, there are 3 roadside and 12 general stations reporting AQHI. Please refer to the [thematic page of AQHI](http://www.aqhi.gov.hk/en) for more information.

Past record of Air Pollution Index (Traditional Chinese) Aug 2011

• Resource ID: ea5a25ed-ac75-414e-8cdd-9957b0a6f3ab
• Format: CSV
• Language: zh-Hant
• Updated: 2025-08-04T17:16:44.114416
• Original URL: http://www.aqhi.gov.hk/api_history/download/hourly/tc_chi/hr082011c.csv

Hourly Air Pollution Index (API) at different Air Quality Monitoring stations in Aug.2011.

The API is a simple way of describing air pollution levels. In Hong Kong, the API converts air pollution data from several types of pollutants into a value ranging from 0 to 500. Since API has been replaced by AQHI on 30 December 2013, please refer to the [archive of API webpage](http://www.aqhi.gov.hk/en/related-websites/air-pollution-index.html), if you want to have the information of API.

The above external links lead to a collection of CSV files containing past hourly API data from July 1999 to December 2013.

The Air Pollution Index has been replaced by the Air Quality Health Index (AQHI) since 30 December 2013. At present, there are 3 roadside and 12 general stations reporting AQHI. Please refer to the [thematic page of AQHI](http://www.aqhi.gov.hk/en) for more information.

Past record of Air Pollution Index (Traditional Chinese) Jul 2002

• Resource ID: ea991a9a-fbba-4821-b4bb-47e6e1f44e22
• Format: CSV
• Language: zh-Hant
• Updated: 2025-08-04T17:09:13.101262
• Original URL: http://www.aqhi.gov.hk/api_history/download/hourly/tc_chi/hr072002c.csv

Hourly Air Pollution Index (API) at different Air Quality Monitoring stations in Jul.2002.

The API is a simple way of describing air pollution levels. In Hong Kong, the API converts air pollution data from several types of pollutants into a value ranging from 0 to 500. Since API has been replaced by AQHI on 30 December 2013, please refer to the [archive of API webpage](http://www.aqhi.gov.hk/en/related-websites/air-pollution-index.html), if you want to have the information of API.

The above external links lead to a collection of CSV files containing past hourly API data from July 1999 to December 2013.

The Air Pollution Index has been replaced by the Air Quality Health Index (AQHI) since 30 December 2013. At present, there are 3 roadside and 12 general stations reporting AQHI. Please refer to the [thematic page of AQHI](http://www.aqhi.gov.hk/en) for more information.

Past record of Air Pollution Index (Traditional Chinese) Dec 2011

• Resource ID: ec52c4ae-3188-4e3e-9c54-0a8708814c30
• Format: CSV
• Language: zh-Hant
• Updated: 2025-08-04T17:17:10.045794
• Original URL: http://www.aqhi.gov.hk/api_history/download/hourly/tc_chi/hr122011c.csv

Hourly Air Pollution Index (API) at different Air Quality Monitoring stations in Dec.2011.

The API is a simple way of describing air pollution levels. In Hong Kong, the API converts air pollution data from several types of pollutants into a value ranging from 0 to 500. Since API has been replaced by AQHI on 30 December 2013, please refer to the [archive of API webpage](http://www.aqhi.gov.hk/en/related-websites/air-pollution-index.html), if you want to have the information of API.

The above external links lead to a collection of CSV files containing past hourly API data from July 1999 to December 2013.

The Air Pollution Index has been replaced by the Air Quality Health Index (AQHI) since 30 December 2013. At present, there are 3 roadside and 12 general stations reporting AQHI. Please refer to the [thematic page of AQHI](http://www.aqhi.gov.hk/en) for more information.

Past record of Air Pollution Index (Traditional Chinese) May 2011

• Resource ID: f0631cb3-f920-410a-9150-409ce0a89bea
• Format: CSV
• Language: zh-Hant
• Updated: 2025-08-04T17:16:25.059322
• Original URL: http://www.aqhi.gov.hk/api_history/download/hourly/tc_chi/hr052011c.csv

Hourly Air Pollution Index (API) at different Air Quality Monitoring stations in May.2011.

The API is a simple way of describing air pollution levels. In Hong Kong, the API converts air pollution data from several types of pollutants into a value ranging from 0 to 500. Since API has been replaced by AQHI on 30 December 2013, please refer to the [archive of API webpage](http://www.aqhi.gov.hk/en/related-websites/air-pollution-index.html), if you want to have the information of API.

The above external links lead to a collection of CSV files containing past hourly API data from July 1999 to December 2013.

The Air Pollution Index has been replaced by the Air Quality Health Index (AQHI) since 30 December 2013. At present, there are 3 roadside and 12 general stations reporting AQHI. Please refer to the [thematic page of AQHI](http://www.aqhi.gov.hk/en) for more information.

Past record of Air Pollution Index (Traditional Chinese) Feb 2005

• Resource ID: f1980e59-d96a-42f1-a6ed-ee81df8bca22
• Format: CSV
• Language: zh-Hant
• Updated: 2025-08-04T17:10:32.856824
• Original URL: http://www.aqhi.gov.hk/api_history/download/hourly/tc_chi/hr022005c.csv

Hourly Air Pollution Index (API) at different Air Quality Monitoring stations in Feb.2005.

The API is a simple way of describing air pollution levels. In Hong Kong, the API converts air pollution data from several types of pollutants into a value ranging from 0 to 500. Since API has been replaced by AQHI on 30 December 2013, please refer to the [archive of API webpage](http://www.aqhi.gov.hk/en/related-websites/air-pollution-index.html), if you want to have the information of API.

The above external links lead to a collection of CSV files containing past hourly API data from July 1999 to December 2013.

The Air Pollution Index has been replaced by the Air Quality Health Index (AQHI) since 30 December 2013. At present, there are 3 roadside and 12 general stations reporting AQHI. Please refer to the [thematic page of AQHI](http://www.aqhi.gov.hk/en) for more information.

Past record of Air Pollution Index (Traditional Chinese) Nov 2003

• Resource ID: f4cc1266-4e85-4ad8-8b14-5a5d30d74cca
• Format: CSV
• Language: zh-Hant
• Updated: 2025-08-04T17:09:49.162573
• Original URL: http://www.aqhi.gov.hk/api_history/download/hourly/tc_chi/hr112003c.csv

Hourly Air Pollution Index (API) at different Air Quality Monitoring stations in Nov.2003.

The API is a simple way of describing air pollution levels. In Hong Kong, the API converts air pollution data from several types of pollutants into a value ranging from 0 to 500. Since API has been replaced by AQHI on 30 December 2013, please refer to the [archive of API webpage](http://www.aqhi.gov.hk/en/related-websites/air-pollution-index.html), if you want to have the information of API.

The above external links lead to a collection of CSV files containing past hourly API data from July 1999 to December 2013.

The Air Pollution Index has been replaced by the Air Quality Health Index (AQHI) since 30 December 2013. At present, there are 3 roadside and 12 general stations reporting AQHI. Please refer to the [thematic page of AQHI](http://www.aqhi.gov.hk/en) for more information.

Past record of Air Pollution Index (Traditional Chinese) Jun 2004

• Resource ID: f636333b-4f14-41e0-8d17-d24e23c9c1c9
• Format: CSV
• Language: zh-Hant
• Updated: 2025-08-04T17:10:08.433607
• Original URL: http://www.aqhi.gov.hk/api_history/download/hourly/tc_chi/hr062004c.csv

Hourly Air Pollution Index (API) at different Air Quality Monitoring stations in Jun.2004.

The API is a simple way of describing air pollution levels. In Hong Kong, the API converts air pollution data from several types of pollutants into a value ranging from 0 to 500. Since API has been replaced by AQHI on 30 December 2013, please refer to the [archive of API webpage](http://www.aqhi.gov.hk/en/related-websites/air-pollution-index.html), if you want to have the information of API.

The above external links lead to a collection of CSV files containing past hourly API data from July 1999 to December 2013.

The Air Pollution Index has been replaced by the Air Quality Health Index (AQHI) since 30 December 2013. At present, there are 3 roadside and 12 general stations reporting AQHI. Please refer to the [thematic page of AQHI](http://www.aqhi.gov.hk/en) for more information.

Past record of Air Pollution Index (Traditional Chinese) Mar 2000

• Resource ID: f8a554d1-299c-46b8-8156-b05cc8334bd3
• Format: CSV
• Language: zh-Hant
• Updated: 2025-08-04T17:08:28.726898
• Original URL: http://www.aqhi.gov.hk/api_history/download/hourly/tc_chi/hr032000c.csv

Hourly Air Pollution Index (API) at different Air Quality Monitoring stations in Mar.2000.

The API is a simple way of describing air pollution levels. In Hong Kong, the API converts air pollution data from several types of pollutants into a value ranging from 0 to 500. Since API has been replaced by AQHI on 30 December 2013, please refer to the [archive of API webpage](http://www.aqhi.gov.hk/en/related-websites/air-pollution-index.html), if you want to have the information of API.

The above external links lead to a collection of CSV files containing past hourly API data from July 1999 to December 2013.

The Air Pollution Index has been replaced by the Air Quality Health Index (AQHI) since 30 December 2013. At present, there are 3 roadside and 12 general stations reporting AQHI. Please refer to the [thematic page of AQHI](http://www.aqhi.gov.hk/en) for more information.

Past record of Air Pollution Index (Traditional Chinese) Jun 2007

• Resource ID: faf01225-974b-4489-bb1e-282b36cc343f
• Format: CSV
• Language: zh-Hant
• Updated: 2025-08-04T17:12:17.459040
• Original URL: http://www.aqhi.gov.hk/api_history/download/hourly/tc_chi/hr062007c.csv

Hourly Air Pollution Index (API) at different Air Quality Monitoring stations in Jun.2007.

The API is a simple way of describing air pollution levels. In Hong Kong, the API converts air pollution data from several types of pollutants into a value ranging from 0 to 500. Since API has been replaced by AQHI on 30 December 2013, please refer to the [archive of API webpage](http://www.aqhi.gov.hk/en/related-websites/air-pollution-index.html), if you want to have the information of API.

The above external links lead to a collection of CSV files containing past hourly API data from July 1999 to December 2013.

The Air Pollution Index has been replaced by the Air Quality Health Index (AQHI) since 30 December 2013. At present, there are 3 roadside and 12 general stations reporting AQHI. Please refer to the [thematic page of AQHI](http://www.aqhi.gov.hk/en) for more information.

Past record of Air Pollution Index (Traditional Chinese) May 2005

• Resource ID: fbd9a0da-b6e1-43c2-916f-5fda501ff4f2
• Format: CSV
• Language: zh-Hant
• Updated: 2025-08-04T17:10:42.514632
• Original URL: http://www.aqhi.gov.hk/api_history/download/hourly/tc_chi/hr052005c.csv

Hourly Air Pollution Index (API) at different Air Quality Monitoring stations in May.2005.

The API is a simple way of describing air pollution levels. In Hong Kong, the API converts air pollution data from several types of pollutants into a value ranging from 0 to 500. Since API has been replaced by AQHI on 30 December 2013, please refer to the [archive of API webpage](http://www.aqhi.gov.hk/en/related-websites/air-pollution-index.html), if you want to have the information of API.

The above external links lead to a collection of CSV files containing past hourly API data from July 1999 to December 2013.

The Air Pollution Index has been replaced by the Air Quality Health Index (AQHI) since 30 December 2013. At present, there are 3 roadside and 12 general stations reporting AQHI. Please refer to the [thematic page of AQHI](http://www.aqhi.gov.hk/en) for more information.

Past record of Air Pollution Index (Traditional Chinese) Apr 2002

• Resource ID: fe71b0fe-2f87-4a75-9f6f-89955527f365
• Format: CSV
• Language: zh-Hant
• Updated: 2025-08-04T17:09:06.790695
• Original URL: http://www.aqhi.gov.hk/api_history/download/hourly/tc_chi/hr042002c.csv

Hourly Air Pollution Index (API) at different Air Quality Monitoring stations in Apr.2002.

The API is a simple way of describing air pollution levels. In Hong Kong, the API converts air pollution data from several types of pollutants into a value ranging from 0 to 500. Since API has been replaced by AQHI on 30 December 2013, please refer to the [archive of API webpage](http://www.aqhi.gov.hk/en/related-websites/air-pollution-index.html), if you want to have the information of API.

The above external links lead to a collection of CSV files containing past hourly API data from July 1999 to December 2013.

The Air Pollution Index has been replaced by the Air Quality Health Index (AQHI) since 30 December 2013. At present, there are 3 roadside and 12 general stations reporting AQHI. Please refer to the [thematic page of AQHI](http://www.aqhi.gov.hk/en) for more information.

Past record of Air Pollution Index (Traditional Chinese) Jan 2004

• Resource ID: fe927d56-1297-4c5a-a60c-04b72c66167e
• Format: CSV
• Language: zh-Hant
• Updated: 2025-08-04T17:09:54.312445
• Original URL: http://www.aqhi.gov.hk/api_history/download/hourly/tc_chi/hr012004c.csv

Hourly Air Pollution Index (API) at different Air Quality Monitoring stations in Jan.2004.

The API is a simple way of describing air pollution levels. In Hong Kong, the API converts air pollution data from several types of pollutants into a value ranging from 0 to 500. Since API has been replaced by AQHI on 30 December 2013, please refer to the [archive of API webpage](http://www.aqhi.gov.hk/en/related-websites/air-pollution-index.html), if you want to have the information of API.

The above external links lead to a collection of CSV files containing past hourly API data from July 1999 to December 2013.

The Air Pollution Index has been replaced by the Air Quality Health Index (AQHI) since 30 December 2013. At present, there are 3 roadside and 12 general stations reporting AQHI. Please refer to the [thematic page of AQHI](http://www.aqhi.gov.hk/en) for more information.

Past record of Air Pollution Index (Traditional Chinese) Sep 2001

• Resource ID: feae9954-c079-4b04-9aa8-bcaf40ec4034
• Format: CSV
• Language: zh-Hant
• Updated: 2025-08-04T17:08:53.341602
• Original URL: http://www.aqhi.gov.hk/api_history/download/hourly/tc_chi/hr092001c.csv

Hourly Air Pollution Index (API) at different Air Quality Monitoring stations in Sep.2001.

The API is a simple way of describing air pollution levels. In Hong Kong, the API converts air pollution data from several types of pollutants into a value ranging from 0 to 500. Since API has been replaced by AQHI on 30 December 2013, please refer to the [archive of API webpage](http://www.aqhi.gov.hk/en/related-websites/air-pollution-index.html), if you want to have the information of API.

The above external links lead to a collection of CSV files containing past hourly API data from July 1999 to December 2013.

The Air Pollution Index has been replaced by the Air Quality Health Index (AQHI) since 30 December 2013. At present, there are 3 roadside and 12 general stations reporting AQHI. Please refer to the [thematic page of AQHI](http://www.aqhi.gov.hk/en) for more information.

Past record of Air Pollution Index (Traditional Chinese) Dec 2000

• Resource ID: ffba2044-e56e-47d8-a316-4cbd85a2c443
• Format: CSV
• Language: zh-Hant
• Updated: 2025-08-04T17:08:39.715861
• Original URL: http://www.aqhi.gov.hk/api_history/download/hourly/tc_chi/hr122000c.csv

Hourly Air Pollution Index (API) at different Air Quality Monitoring stations in Dec.2000.

The API is a simple way of describing air pollution levels. In Hong Kong, the API converts air pollution data from several types of pollutants into a value ranging from 0 to 500. Since API has been replaced by AQHI on 30 December 2013, please refer to the [archive of API webpage](http://www.aqhi.gov.hk/en/related-websites/air-pollution-index.html), if you want to have the information of API.

The above external links lead to a collection of CSV files containing past hourly API data from July 1999 to December 2013.

The Air Pollution Index has been replaced by the Air Quality Health Index (AQHI) since 30 December 2013. At present, there are 3 roadside and 12 general stations reporting AQHI. Please refer to the [thematic page of AQHI](http://www.aqhi.gov.hk/en) for more information.

Document availability

Parsed specifications and data dictionaries: not available for this dataset. Document availability.