Choi Hung Estate air quality
Updated 16/10, 12:01
The data may not be up to date.
Current AQI
US EPA scale · observed at 12:00
84
ModerateUnusually sensitive people should limit prolonged outdoor exertion.
Pollutants
Current concentrations, µg/m³
| Pollutant | Concentration | Description |
|---|---|---|
| PM2.5 | 30,3 µg/m³ | Fine particles ≤ 2.5 µm |
| PM10 | 40,3 µg/m³ | Particles ≤ 10 µm |
| O₃ | 158 µg/m³ | Ozone |
| NO₂ | 4,6 µg/m³ | Nitrogen dioxide |
| SO₂ | 5,4 µg/m³ | Sulphur dioxide |
| CO | 297 µg/m³ | Carbon monoxide |
AQI, next 16 hours
Show data table
| Time | AQI | Level |
|---|---|---|
| 20:00 | 156 | Unhealthy |
| 21:00 | 155 | Unhealthy |
| 22:00 | 150 | Unhealthy for sensitive groups |
| 23:00 | 141 | Unhealthy for sensitive groups |
| 00:00 | 130 | Unhealthy for sensitive groups |
| 01:00 | 119 | Unhealthy for sensitive groups |
| 02:00 | 108 | Unhealthy for sensitive groups |
| 03:00 | 98 | Moderate |
| 04:00 | 89 | Moderate |
| 05:00 | 82 | Moderate |
| 06:00 | 82 | Moderate |
| 07:00 | 81 | Moderate |
| 08:00 | 80 | Moderate |
| 09:00 | 79 | Moderate |
| 10:00 | 78 | Moderate |
| 11:00 | 77 | Moderate |