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 |
AQI, next 18 hours
Show data table
| Time | AQI | Level |
|---|---|---|
| 12:00 | 136 | Unhealthy for sensitive groups |
| 13:00 | 137 | Unhealthy for sensitive groups |
| 14:00 | 137 | Unhealthy for sensitive groups |
| 15:00 | 137 | Unhealthy for sensitive groups |
| 16:00 | 137 | Unhealthy for sensitive groups |
| 17:00 | 136 | Unhealthy for sensitive groups |
| 18:00 | 135 | Unhealthy for sensitive groups |
| 19:00 | 134 | Unhealthy for sensitive groups |
| 20:00 | 132 | Unhealthy for sensitive groups |
| 21:00 | 131 | Unhealthy for sensitive groups |
| 22:00 | 129 | Unhealthy for sensitive groups |
| 23:00 | 128 | Unhealthy for sensitive groups |
| 00:00 | 127 | Unhealthy for sensitive groups |
| 01:00 | 126 | Unhealthy for sensitive groups |
| 02:00 | 125 | Unhealthy for sensitive groups |
| 03:00 | 124 | Unhealthy for sensitive groups |
| 04:00 | 123 | Unhealthy for sensitive groups |
| 05:00 | 121 | Unhealthy for sensitive groups |