San Francisco air quality
Updated 18/10, 22.01
The data may not be up to date.
Current AQI
US EPA scale · observed at 22.00
50
GoodAir quality is good; enjoy outdoor activities.
Pollutants
Current concentrations, µg/m³
| Pollutant | Concentration | Description |
|---|---|---|
| PM2.5 | 7,7 µg/m³ | Fine particles ≤ 2.5 µm |
| PM10 | 7,8 µg/m³ | Particles ≤ 10 µm |
| O₃ | 51 µg/m³ | Ozone |
| NO₂ | 8,2 µg/m³ | Nitrogen dioxide |
| SO₂ | 2,6 µg/m³ | Sulphur dioxide |
| CO | 179 µg/m³ | Carbon monoxide |