Fresno vs Stockton Air Quality Comparison
Which city has cleaner air right now, from the latest EPA AirNow AQI
As of September 23, 2026, Stockton, CA has cleaner air than Fresno, CA — AQI 53 (Moderate) vs 74 (Moderate), a gap of 21 AQI points in the latest EPA AirNow observations. Lower AQI means cleaner air. Fresno's reading is driven by PM10 and Stockton's by PM2.5.
Fresno, CA
Moderate
Stockton, CA
Moderate
Summary
Stockton has 21 points better air quality
Stockton has an AQI of 53 compared to 74
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5-Day Forecast Comparison
| Day | Fresno | Stockton | Better |
|---|---|---|---|
| Today | AQI 61 | AQI 50 | Stockton |