Air quality in Tsuen Wan District, Hong Kong, China today
Mr. Duck’s Air Quality Score
Good air today for Tsuen Wan District, Hong Kong, China
This friendly indicator summarizes the latest city readings. For health guidance, please see: EPA AirNow or WHO.
Air quality today
The air quality in Tsuen Wan District is classified as Good today. The primary pollutant identified is PM2.5, with a measured concentration of 6.5 µg/m³, while the accompanying PM10 level stands at 9.0 µg/m³ based on five valid observations.
Data are shown via OpenAQ and reflect the current monitoring results for this location. This page is informational; for health guidance, use official sources such as EPA AirNow or WHO.
Latest sensor values
PM categories follow US EPA AQI breakpoints, shown here as an estimate derived from the latest valid measurements (this project does not compute EPA NowCast/24-hour AQI yet).
What the data includes
The Tsuen Wan District air‑quality feed contains a single monitoring location that reports six common pollutants: carbon monoxide (CO), nitrogen dioxide (NO₂), ozone (O₃), particulate matter ≤10 µm (PM₁₀), particulate matter ≤2.5 µm (PM₂.₅) and sulphur dioxide (SO₂). All six measurements are present, but the dataset consists of only one row, so spatial coverage within the district is limited to that single site.
Each pollutant’s most recent reading was recorded on 2026‑02‑10 at 22:00 UTC, meaning the data are fresh by less than three days for every component. The values are uniform across the dataset because each metric has a single observation: CO registers at 390.5 µg/m³, NO₂ at 28.3 µg/m³, O₃ at 40.3 µg/m³, PM₁₀ at 9.0 µg/m³, PM₂.₅ at 6.5 µg/m³ and SO₂ at 0.6 µg/m³. Because there is only one measurement per pollutant, the minimum, median and maximum are identical, giving a zero spread for each parameter.
The data therefore provide a snapshot of current concentrations but do not capture variability over time or across different parts of Tsuen Wan. With just one reporting station, any changes in local emissions or meteorology that affect other neighborhoods will not be reflected here. Users should keep in mind that the single‑point, same‑day values give an immediate picture of conditions at that location, while broader district‑wide trends would require additional stations or repeated sampling over longer periods.
Learn more about sources and filtering: About the data.
Trusted references: WHO (Air pollution) · US EPA AirNow · European Environment Agency (Air)
Latest sensor values (bars)
PM categories follow US EPA AQI breakpoints, shown here as an estimate derived from the latest valid measurements (this project does not compute EPA NowCast/24-hour AQI yet).
Data notes
The dataset for Tsuen Wan District contains five valid measurements and is updated within three days, with the most recent data recorded at 2026‑02‑10 22:00 UTC. These figures represent a snapshot of current conditions; however, air quality can differ across neighborhoods and change throughout the day, so local variations may not be fully captured in this summary.
OpenAQ station rows
| Station | Parameter | Value | Unit | Last updated |
|---|---|---|---|---|
| Tsuen Wan | no2 | 28.3 | µg/m³ | 2026-02-10 22:00 UTC |
| Tsuen Wan | o3 | 40.3 | µg/m³ | 2026-02-10 22:00 UTC |
| Tsuen Wan | pm10 | 9.0 | µg/m³ | 2026-02-10 22:00 UTC |
| Tsuen Wan | pm25 | 6.5 | µg/m³ | 2026-02-10 22:00 UTC |
| Tsuen Wan | so2 | 0.6 | µg/m³ | 2026-02-10 22:00 UTC |