San Francisco vs Riverside 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 Riverside, CA — AQI 13 (Good) vs 56 (Moderate), a gap of 43 AQI points in the latest EPA AirNow observations. Lower AQI means cleaner air. San Francisco's reading is driven by O3 and Riverside's by PM2.5.
San Francisco, CA
Good
Riverside, CA
Moderate
Summary
San Francisco has 43 points better air quality
San Francisco has an AQI of 13 compared to 56
Extra Protection for Riverside Homes
Air quality in Riverside is moderate (AQI 56), 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 | Riverside | Better |
|---|---|---|---|
| Today | AQI 55 | AQI 50 | Riverside |