San Francisco vs Fresno 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 Fresno, CA — AQI 13 (Good) vs 87 (Moderate), a gap of 74 AQI points in the latest EPA AirNow observations. Lower AQI means cleaner air. San Francisco's reading is driven by O3 and Fresno's by PM2.5.
San Francisco, CA
Good
Fresno, CA
Moderate
Summary
San Francisco has 74 points better air quality
San Francisco has an AQI of 13 compared to 87
Extra Protection for Fresno Homes
Air quality in Fresno is moderate (AQI 87), 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 | Fresno | Better |
|---|---|---|---|
| Today | AQI 55 | AQI 99 | San Francisco |