Los Angeles vs Santa Rosa Air Quality Comparison
Which city has cleaner air right now, from the latest EPA AirNow AQI
As of November 8, 2026, Santa Rosa, CA has cleaner air than Los Angeles, CA — AQI 6 (Good) vs 21 (Good), a gap of 15 AQI points in the latest EPA AirNow observations. Lower AQI means cleaner air. Los Angeles's reading is driven by O3 and Santa Rosa's by O3.
Los Angeles, CA
Good
Santa Rosa, CA
Good
Summary
Santa Rosa has 15 points better air quality
Santa Rosa has an AQI of 6 compared to 21
Reduce Indoor Ozone in Los Angeles
Today's main pollutant in Los Angeles is ground-level ozone (AQI 21). Important: standard HEPA filters do NOT remove ozone — only a purifier with a substantial activated-carbon bed adsorbs it. The biggest wins are cutting indoor sources (gas appliances, certain "ionizer" purifiers) and ventilating when outdoor ozone is low (early morning). A high-carbon unit helps with the gases and VOCs that linger indoors.
Compare activated-carbon purifiers (for gases & ozone):
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5-Day Forecast Comparison
| Day | Los Angeles | Santa Rosa | Better |
|---|---|---|---|
| Today | AQI 50 | AQI 44 | Santa Rosa |