Ma On Shan air quality
Updated 10/21 13:01
The data may not be up to date.
Current AQI
US EPA scale · observed at 13:00
106
Unhealthy for sensitive groupsChildren, older adults and people with heart or lung disease should reduce outdoor activity.
Pollutants
Current concentrations, µg/m³
| Pollutant | Concentration | Description |
|---|---|---|
| PM2.5 | 36,6 µg/m³ | Fine particles ≤ 2.5 µm |
| PM10 | 36,7 µg/m³ | Particles ≤ 10 µm |
| O₃ | 215 µg/m³ | Ozone |
| NO₂ | 30,6 µg/m³ | Nitrogen dioxide |
| SO₂ | 11,5 µg/m³ | Sulphur dioxide |
| CO | 315 µg/m³ | Carbon monoxide |
AQI, next 16 hours
Show data table
| Time | AQI | Level |
|---|---|---|
| 21:00 | 186 | Unhealthy |
| 22:00 | 170 | Unhealthy |
| 23:00 | 150 | Unhealthy for sensitive groups |
| 00:00 | 122 | Unhealthy for sensitive groups |
| 01:00 | 113 | Unhealthy for sensitive groups |
| 02:00 | 111 | Unhealthy for sensitive groups |
| 03:00 | 108 | Unhealthy for sensitive groups |
| 04:00 | 104 | Unhealthy for sensitive groups |
| 05:00 | 99 | Moderate |
| 06:00 | 95 | Moderate |
| 07:00 | 91 | Moderate |
| 08:00 | 87 | Moderate |
| 09:00 | 82 | Moderate |
| 10:00 | 78 | Moderate |
| 11:00 | 75 | Moderate |
| 12:00 | 72 | Moderate |