San Francisco vs Stockton Air Quality Comparison
Which city has cleaner air right now, from the latest EPA AirNow AQI
As of November 8, 2026, San Francisco, CA has cleaner air than Stockton, CA — AQI 13 (Good) vs 60 (Moderate), a gap of 47 AQI points in the latest EPA AirNow observations. Lower AQI means cleaner air. San Francisco's reading is driven by O3 and Stockton's by PM2.5.
San Francisco, CA
Good
Stockton, CA
Moderate
Summary
San Francisco has 47 points better air quality
San Francisco has an AQI of 13 compared to 60
Extra Protection for Stockton Homes
Air quality in Stockton is moderate (AQI 60), with fine particles (PM2.5) the main concern. A True-HEPA purifier gives sensitive groups — kids, seniors and anyone with asthma or allergies — cleaner air indoors on days like today.
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5-Day Forecast Comparison
| Day | San Francisco | Stockton | Better |
|---|---|---|---|
| Today | AQI 55 | AQI 64 | San Francisco |