Miami vs St. Petersburg Air Quality Comparison
Which city has cleaner air right now, from the latest EPA AirNow AQI
As of September 23, 2026, Miami, FL has cleaner air than St. Petersburg, FL — AQI 26 (Good) vs 31 (Good), a gap of 5 AQI points in the latest EPA AirNow observations. Lower AQI means cleaner air. Miami's reading is driven by O3 and St. Petersburg's by O3.
Miami, FL
Good
St. Petersburg, FL
Good
Summary
Miami has 5 points better air quality
Miami has an AQI of 26 compared to 31
Reduce Indoor Ozone in St. Petersburg
Today's main pollutant in St. Petersburg is ground-level ozone (AQI 31). 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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