San Jose vs Long Beach Air Quality Comparison
Which city has cleaner air right now, from the latest EPA AirNow AQI
As of September 23, 2026, Long Beach, CA has cleaner air than San Jose, CA — AQI 42 (Good) vs 63 (Moderate), a gap of 21 AQI points in the latest EPA AirNow observations. Lower AQI means cleaner air. San Jose's reading is driven by PM2.5 and Long Beach's by PM2.5.
San Jose, CA
Moderate
Long Beach, CA
Good
Summary
Long Beach has 21 points better air quality
Long Beach has an AQI of 42 compared to 63
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Air quality in San Jose is moderate (AQI 63), 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 Jose | Long Beach | Better |
|---|---|---|---|
| Today | AQI 54 | AQI 50 | Long Beach |