Jacksonville vs St. Petersburg Air Quality Comparison
Which city has cleaner air right now, from the latest EPA AirNow AQI
As of September 23, 2026, St. Petersburg, FL has cleaner air than Jacksonville, FL — AQI 31 (Good) vs 43 (Good), a gap of 12 AQI points in the latest EPA AirNow observations. Lower AQI means cleaner air. Jacksonville's reading is driven by PM2.5 and St. Petersburg's by O3.
Jacksonville, FL
Good
St. Petersburg, FL
Good
Summary
St. Petersburg has 12 points better air quality
St. Petersburg has an AQI of 31 compared to 43
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