Riverside 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 Riverside, CA — AQI 42 (Good) vs 71 (Moderate), a gap of 29 AQI points in the latest EPA AirNow observations. Lower AQI means cleaner air. Riverside's reading is driven by O3 and Long Beach's by PM2.5.
Riverside, CA
Moderate
Long Beach, CA
Good
Summary
Long Beach has 29 points better air quality
Long Beach has an AQI of 42 compared to 71
Reduce Indoor Ozone in Riverside
Today's main pollutant in Riverside is ground-level ozone (AQI 71). 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 | Riverside | Long Beach | Better |
|---|---|---|---|
| Today | AQI 101 | AQI 50 | Long Beach |