# Counties in Florida by highest daily 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_max`
- Unit: index
- Definition: Highest daily Air Quality Index (AQI) value recorded in a US county during the year, from the EPA AirData annual summaries. Values above 500 are beyond the AQI scale and are published as EPA computes them.
- Source: U.S. Environmental Protection Agency, EPA AirData annual AQI by county: highest 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: highest daily AQI. https://aqs.epa.gov/aqsweb/airdata/download_files.html#Annual. Retrieved 2026-10-12.
- Web page: https://invokely.ai/rankings/highest-daily-air-quality-index/florida-counties

| Rank | Place | index |
|---:|---|---:|
| 1 | Baker County | 155 |
| 2 | Leon County | 140 |
| 3 | Duval County | 136 |
| 4 | Pinellas County | 129 |
| 5 | Citrus County | 125 |
| 6 | Hillsborough County | 122 |
| 7 | Pasco County | 115 |
| 8 | Miami-Dade County | 113 |
| 9 | Lake County | 112 |
| 10 | Orange County | 105 |
| 10 | Osceola County | 105 |
| 12 | Escambia County | 104 |
| 13 | Marion County | 101 |
| 14 | Polk County | 100 |
| 15 | Lee County | 97 |
| 15 | Manatee County | 97 |
| 15 | Seminole County | 97 |
| 18 | Broward County | 93 |
| 19 | Bay County | 92 |
| 20 | Volusia County | 90 |
| 21 | Indian River County | 87 |
| 21 | Palm Beach County | 87 |
| 23 | Okaloosa County | 84 |
| 23 | Sarasota County | 84 |
| 25 | Brevard County | 80 |
| 25 | Columbia County | 80 |
| 25 | Highlands County | 80 |
| 25 | Santa Rosa County | 80 |
| 25 | Wakulla County | 80 |
| 30 | Holmes County | 79 |
| 31 | Flagler County | 77 |
| 31 | Liberty County | 77 |
| 33 | Martin County | 74 |
| 34 | Hamilton County | 72 |
| 35 | Collier County | 71 |
| 36 | Alachua County | 69 |
| 36 | Putnam County | 69 |
| 38 | St. Lucie County | 67 |