San Francisco vs Oakland Air Quality Comparison
Which city has cleaner air right now, from the latest EPA AirNow AQI
As of September 24, 2026, San Francisco, CA has cleaner air than Oakland, CA — AQI 52 (Moderate) vs 55 (Moderate), a gap of 3 AQI points in the latest EPA AirNow observations. Lower AQI means cleaner air. San Francisco's reading is driven by PM2.5 and Oakland's by PM2.5.
San Francisco, CA
Moderate
Oakland, CA
Moderate
Summary
San Francisco has 3 points better air quality
San Francisco has an AQI of 52 compared to 55
Extra Protection for Oakland Homes
Air quality in Oakland is moderate (AQI 55), 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 | Oakland | Better |
|---|---|---|---|
| Today | AQI 55 | AQI 55 | Tie |