Riverside vs Santa Rosa Air Quality Comparison
Which city has cleaner air right now, from the latest EPA AirNow AQI
As of September 24, 2026, Santa Rosa, CA has cleaner air than Riverside, CA — AQI 42 (Good) vs 58 (Moderate), a gap of 16 AQI points in the latest EPA AirNow observations. Lower AQI means cleaner air. Riverside's reading is driven by PM2.5 and Santa Rosa's by PM2.5.
Riverside, CA
Moderate
Santa Rosa, CA
Good
Summary
Santa Rosa has 16 points better air quality
Santa Rosa has an AQI of 42 compared to 58
Extra Protection for Riverside Homes
Air quality in Riverside is moderate (AQI 58), 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 | Riverside | Santa Rosa | Better |
|---|---|---|---|
| Today | AQI 122 | AQI 48 | Santa Rosa |