# Counties in Florida by median Air Quality Index (US EPA), 2025

All 38 values come from U.S. Environmental Protection Agency for 2025, so the places are comparable. 4 counties have no value for that period and are not ranked.

- Indicator id: `aqi_median`
- Unit: index
- Definition: Median of the daily Air Quality Index (AQI) values of a US county over the days of the year with an AQI, from the EPA AirData annual summaries. The daily county AQI is the highest AQI among the monitors and pollutants reported that day (ozone, PM2.5, PM10, carbon monoxide and nitrogen dioxide). Lower is cleaner: 0 to 50 is good, 51 to 100 moderate and above 100 unhealthy for sensitive groups.
- Source: U.S. Environmental Protection Agency, EPA AirData annual AQI by county: median daily AQI (https://aqs.epa.gov/aqsweb/airdata/download_files.html#Annual)
- Publisher page: https://invokely.ai/en/publishers/environmental-protection-agency
- Retrieved: 2026-10-12
- Citation: U.S. Environmental Protection Agency, Air Quality System, AirData. EPA AirData annual AQI by county: median daily AQI. https://aqs.epa.gov/aqsweb/airdata/download_files.html#Annual. Retrieved 2026-10-12.
- Web page: https://invokely.ai/rankings/median-air-quality-index/florida-counties

| Rank | Place | index |
|---:|---|---:|
| 1 | Duval County | 51 |
| 2 | Hillsborough County | 49 |
| 3 | Columbia County | 48 |
| 3 | Leon County | 48 |
| 5 | Miami-Dade County | 47 |
| 6 | Hamilton County | 46 |
| 6 | Holmes County | 46 |
| 6 | Marion County | 46 |
| 6 | Sarasota County | 46 |
| 10 | Baker County | 44 |
| 10 | Bay County | 44 |
| 10 | Pinellas County | 44 |
| 10 | Santa Rosa County | 44 |
| 14 | Broward County | 43 |
| 14 | Citrus County | 43 |
| 14 | Collier County | 43 |
| 14 | Escambia County | 43 |
| 14 | Orange County | 43 |
| 19 | Volusia County | 41 |
| 19 | Wakulla County | 41 |
| 21 | Lee County | 40 |
| 21 | Martin County | 40 |
| 21 | Osceola County | 40 |
| 24 | Palm Beach County | 39 |
| 24 | Seminole County | 39 |
| 26 | Brevard County | 38 |
| 27 | Alachua County | 37 |
| 27 | Indian River County | 37 |
| 27 | Pasco County | 37 |
| 30 | Manatee County | 36 |
| 30 | Okaloosa County | 36 |
| 32 | Highlands County | 35 |
| 32 | Lake County | 35 |
| 34 | Flagler County | 34 |
| 34 | Polk County | 34 |
| 34 | St. Lucie County | 34 |
| 37 | Liberty County | 33 |
| 38 | Putnam County | 21 |