# Daily number of hours of reduced visibility

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- ID: ` hk-hko-rss-daily-number-of-hours-of-reduced-visibility `
- Publisher: [Hong Kong Observatory](/publishers/568222e3-81c2-49d8-83a7-f9a2fdacc52f/) · [Markdown](/publishers/568222e3-81c2-49d8-83a7-f9a2fdacc52f/index.md)
- Categories: [Climate and Weather](/categories/climate-and-weather/) · [Markdown](/categories/climate-and-weather/index.md)
- Tags: Not stated
- Resources: 3
- Updated: 2026-03-19T17:12:31.351295
- Update frequency (publisher metadata): Monthly
- Harvest started: 2026-10-20T22:31:00.105Z
- Licence: Not stated
- Source: [Official metadata record](<https://data.gov.hk/en-data/api/3/action/package_show?id=hk-hko-rss-daily-number-of-hours-of-reduced-visibility>)

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

## Description

Data on daily number of hours of reduced visibility \(Please visit the reference link for other climate information\)

## Resources

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

### [Daily number of hours of reduced visibility (Spatial Data Format)](<https://portal.csdi.gov.hk/geoportal/?datasetId=hko_rcd_1698120368052_69557>)

- Resource ID: ` b0973512-4593-4071-ba23-2937b03a609c `
- Format: API
- Language: en, zh-Hant, zh-Hans
- Updated: 2025-08-26T16:33:35.688237
- API flag (publisher metadata): Y
- Original URL: ` https://portal.csdi.gov.hk/geoportal/?datasetId=hko_rcd_1698120368052_69557 `

Daily number of hours of reduced visibility\. The multiple file formats are available for datasets download in API\.

### [Daily Number of Hours of Reduced Visibility Current Year - Hong Kong International Airport](<https://data.weather.gov.hk/weatherAPI/cis/csvfile/HKA/2026/daily_HKA_RVIS_2026.csv>)

- Resource ID: ` d3cf87b9-ab1e-44ef-b525-857f58d2f621 `
- Format: CSV
- Language: en, zh-Hant, zh-Hans
- Updated: 2026-03-19T17:12:31.364613
- API flag (publisher metadata): N
- Original URL: ` https://data.weather.gov.hk/weatherAPI/cis/csvfile/HKA/2026/daily_HKA_RVIS_2026.csv `

Daily Number of Hours of Reduced Visibility Current Year \- Hong Kong International Airport

### [Daily Number of Hours of Reduced Visibility All Year - Hong Kong International Airport](<https://data.weather.gov.hk/weatherAPI/cis/csvfile/HKA/ALL/daily_HKA_RVIS_ALL.csv>)

- Resource ID: ` fb27581a-9ed4-4d92-969d-13f24b363bdb `
- Format: CSV
- Language: en, zh-Hant, zh-Hans
- Updated: 2025-06-25T16:33:27.680951
- API flag (publisher metadata): N
- Original URL: ` https://data.weather.gov.hk/weatherAPI/cis/csvfile/HKA/ALL/daily_HKA_RVIS_ALL.csv `

Daily Number of Hours of Reduced Visibility All Year \- Hong Kong International Airport

## Specifications (source links)

### Publisher documentation

- [Data dictionary](<https://data.weather.gov.hk/weatherAPI/doc/data_dictionary_daily_number_of_hours_of_reduced_visibility.pdf>) — source-linked; Dataset: data\_dictionary
- [Publisher reference](<https://www.hko.gov.hk/en/cis/climat.htm>) — source-linked; Dataset: references

Original links supplied in publisher metadata. A source link does not mean that document content is hosted, parsed or verified here; any hosted extraction and its review scope are listed separately below.


Upstream metadata associations only; these links do not validate individual resources or document sections. No extracted document body is hosted here.

## Document availability

Parsed specifications and data dictionaries: not available for this dataset. [Document availability](/documents.md).