California Air Quality Index
Updated 31 Mar, 2:06 pm
Air Quality Index — California
36
Fair
020406080100+
Air quality is acceptable. Unusually sensitive people should consider limiting prolonged outdoor exertion.
Pollutant levels
| Pollutant | Description | Level |
|---|---|---|
| PM2.5 | Fine particulate matter (<2.5µm) | 10.7 µg/m³ |
| PM10 | Coarse particulate matter (<10µm) | 15 µg/m³ |
European Air Quality Index scale
0–20 (Good): Air quality is excellent. No health impacts expected.
21–40 (Fair): Air quality is acceptable. Sensitive individuals may notice minor effects.
41–60 (Moderate): Sensitive groups may experience mild effects. General population unaffected.
61–80 (Poor): People with respiratory or heart conditions should reduce outdoor activity.
81–100 (Very Poor): Everyone should reduce outdoor exertion. Sensitive groups should stay indoors.
100+ (Extremely Poor): Health alert. Avoid all outdoor activities. Keep windows closed.
Air quality data from Open-Meteo using the European Air Quality Index (EAQI).
Frequently asked questions
What is the air quality in California today?
The air quality index in California today is 36 (European AQI), rated "Fair". PM2.5 is 10.7 µg/m³. PM10 is 15 µg/m³.
Is the air quality safe in California?
Yes, the air quality in California is currently fair with an AQI of 36. Outdoor activities are safe for everyone.
What is the European Air Quality Index?
The European Air Quality Index (EAQI) rates air quality on a scale from 0 (Good) to 100+ (Extremely Poor). It considers pollutants including PM2.5 and PM10. Values below 40 are generally considered safe for outdoor activities.