Mesa vs Scottsdale Air Quality Comparison
Which city has cleaner air right now, from the latest EPA AirNow AQI
As of September 23, 2026, Mesa, AZ has cleaner air than Scottsdale, AZ — AQI 37 (Good) vs 47 (Good), a gap of 10 AQI points in the latest EPA AirNow observations. Lower AQI means cleaner air. Mesa's reading is driven by O3 and Scottsdale's by O3.
Mesa, AZ
Good
Scottsdale, AZ
Good
Summary
Mesa has 10 points better air quality
Mesa has an AQI of 37 compared to 47
Reduce Indoor Ozone in Scottsdale
Today's main pollutant in Scottsdale is ground-level ozone (AQI 47). 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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