San Diego vs Stockton Air Quality Comparison
Which city has cleaner air right now, from the latest EPA AirNow AQI
As of November 8, 2026, San Diego, CA has cleaner air than Stockton, CA — AQI 34 (Good) vs 60 (Moderate), a gap of 26 AQI points in the latest EPA AirNow observations. Lower AQI means cleaner air. San Diego's reading is driven by O3 and Stockton's by PM2.5.
San Diego, CA
Good
Stockton, CA
Moderate
Summary
San Diego has 26 points better air quality
San Diego has an AQI of 34 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 Diego | Stockton | Better |
|---|---|---|---|
| Today | AQI 54 | AQI 64 | San Diego |