Hong Kong air quality
Updated 14/10, 14:00
The data may not be up to date.
Current AQI
US EPA scale · observed at 14:00
169
UnhealthyEveryone should reduce outdoor activity; sensitive groups should stay indoors.
Pollutants
Current concentrations, µg/m³
| Pollutant | Concentration | Description |
|---|---|---|
| PM2.5 | 32,4 µg/m³ | Fine particles ≤ 2.5 µm |
| PM10 | 34,7 µg/m³ | Particles ≤ 10 µm |
| O₃ | 185 µg/m³ | Ozone |
| NO₂ | 22,8 µg/m³ | Nitrogen dioxide |
| SO₂ | 35,9 µg/m³ | Sulphur dioxide |
| CO | 282 µg/m³ | Carbon monoxide |
AQI, next 18 hours
Show data table
| Time | AQI | Level |
|---|---|---|
| 20:00 | 164 | Unhealthy |
| 21:00 | 162 | Unhealthy |
| 22:00 | 161 | Unhealthy |
| 23:00 | 159 | Unhealthy |
| 00:00 | 157 | Unhealthy |
| 01:00 | 155 | Unhealthy |
| 02:00 | 154 | Unhealthy |
| 03:00 | 151 | Unhealthy |
| 04:00 | 147 | Unhealthy for sensitive groups |
| 05:00 | 139 | Unhealthy for sensitive groups |
| 06:00 | 131 | Unhealthy for sensitive groups |
| 07:00 | 121 | Unhealthy for sensitive groups |
| 08:00 | 111 | Unhealthy for sensitive groups |
| 09:00 | 104 | Unhealthy for sensitive groups |
| 10:00 | 100 | Moderate |
| 11:00 | 98 | Moderate |
| 12:00 | 97 | Moderate |
| 13:00 | 96 | Moderate |