San air quality
Updated 12/10, 06:00
The data may not be up to date.
Current AQI
US EPA scale · observed at 06:00
135
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 | 44,7 µg/m³ | Fine particles ≤ 2.5 µm |
| PM10 | 91,5 µg/m³ | Particles ≤ 10 µm |
| O₃ | 23 µg/m³ | Ozone |
| NO₂ | 3,2 µg/m³ | Nitrogen dioxide |
| SO₂ | 0,3 µg/m³ | Sulphur dioxide |
| CO | 135 µg/m³ | Carbon monoxide |