Air Quality in California
Real-time air quality data for 8 cities in California. Average AQI across the state is currently 71 (Moderate).
71
Moderate
State Average
8
Cities Monitored
2
Cities with Good Air Quality
Cities in California
Sorted by air quality (best first)
About Air Quality in California
Air quality in California varies by location, season, and weather conditions. We monitor air quality across 8 major cities using data from the EPA's AirNow network.
The best air quality in California is currently in San Diego with an AQI of 45. The area requiring most caution is Fresno with an AQI of 108.
Factors Affecting Air Quality in California
- Vehicle emissions and traffic patterns
- Industrial activity and power generation
- Weather conditions (wind, temperature inversions)
- Wildfire smoke (seasonal)
- Geographic features (valleys, coastal areas)