Air quality in Hong Kong today
Hong Kong SAR China · Updated Friday 08:00 (local time) · Model data from the Copernicus Atmosphere Monitoring Service
Poor European AQI
Consider less intense outdoor activity, especially if you have heart or lung conditions.
Pollutants right now
| Pollutant | Value | Level |
|---|---|---|
| PM2.5 | 34 µg/m³ | Poor |
| PM10 | 42 µg/m³ | Moderate |
| NO₂ | 64 µg/m³ | Fair |
| O₃ | 47 µg/m³ | Good |
The pollutant that matters most in Hong Kong right now is PM2.5.
Forecast: next 24 hours
Over the next 24 hours the air in Hong Kong is expected to be worst around Fri 21:00 (AQI 81, very poor). The cleanest hour is expected around Fri 11:00.
| Time | AQI | Level | PM2.5 |
|---|---|---|---|
| Fri 09:00 | 58 | Moderate | 27 |
| Fri 12:00 | 58 | Moderate | 31 |
| Fri 15:00 | 65 | Poor | 30 |
| Fri 18:00 | 62 | Poor | 27 |
| Fri 21:00 | 81 | Very poor | 34 |
| Sat 00:00 | 77 | Poor | 36 |
| Sat 03:00 | 71 | Poor | 31 |
| Sat 06:00 | 67 | Poor | 48 |
The last 30 days
Over the last 30 days the average daily AQI in Hong Kong was 70, with 19 day(s) rated poor or worse. The cleanest day was 1 Sept, the most polluted 8 Sept.
Questions and answers
- Is the air in Hong Kong good today?
- Right now the European Air Quality Index in Hong Kong is 62, which is poor. Consider less intense outdoor activity, especially if you have heart or lung conditions.
- What pollutes the air in Hong Kong?
- At the moment PM2.5 contributes most to the air quality index in Hong Kong. The index takes the worst of fine particles (PM2.5), coarser particles (PM10), nitrogen dioxide, ozone and sulphur dioxide.
- When will the air in Hong Kong be cleanest?
- Over the next 24 hours the air in Hong Kong is expected to be worst around Fri 21:00 (AQI 81, very poor). The cleanest hour is expected around Fri 11:00.
- Where does this data come from?
- Wheezair shows model estimates from the Copernicus Atmosphere Monitoring Service (CAMS), served by Open-Meteo: about 11 km resolution in Europe and 40 km elsewhere, updated daily. They are not station measurements, so a busy street can be worse than its city's value.