# Counties in Florida by share of days with good air quality (US EPA AQI), 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_good_days_share`
- Unit: %
- Definition: Days with a daily Air Quality Index of 0 to 50 (good) as a percentage of the days of the year with an AQI in a US county. Calculated by Invokely from the day counts in the EPA AirData annual summaries; both counts are stored with each value.
- Source: U.S. Environmental Protection Agency, EPA AirData annual AQI by county: good days as a share of days with an AQI, calculated with stored counts (https://aqs.epa.gov/aqsweb/airdata/download_files.html#Annual)
- Retrieved: 2026-10-12
- Citation: U.S. Environmental Protection Agency, Air Quality System, AirData. EPA AirData annual AQI by county: good days as a share of days with an AQI, calculated with stored counts. https://aqs.epa.gov/aqsweb/airdata/download_files.html#Annual. Retrieved 2026-10-12.
- Web page: https://invokely.ai/rankings/good-air-quality-days-share/florida-counties

| Rank | Place | % |
|---:|---|---:|
| 1 | Liberty County | 98.5 |
| 2 | Flagler County | 98.1 |
| 3 | St. Lucie County | 96.4 |
| 4 | Putnam County | 95.6 |
| 5 | Polk County | 95.5 |
| 6 | Lake County | 95 |
| 7 | Highlands County | 94.9 |
| 8 | Indian River County | 94.1 |
| 9 | Okaloosa County | 93.9 |
| 10 | Pasco County | 92.6 |
| 11 | Brevard County | 91.2 |
| 12 | Manatee County | 91 |
| 13 | Alachua County | 88.7 |
| 14 | Seminole County | 84.6 |
| 15 | Osceola County | 83.6 |
| 16 | Volusia County | 81.4 |
| 17 | Martin County | 79.5 |
| 18 | Lee County | 76.4 |
| 18 | Palm Beach County | 76.4 |
| 20 | Wakulla County | 75.6 |
| 21 | Escambia County | 73.7 |
| 22 | Broward County | 73.4 |
| 23 | Orange County | 72.9 |
| 24 | Collier County | 72.1 |
| 25 | Citrus County | 71.1 |
| 26 | Santa Rosa County | 70.7 |
| 27 | Pinellas County | 69.6 |
| 28 | Baker County | 69.5 |
| 29 | Marion County | 67.3 |
| 30 | Bay County | 66.4 |
| 31 | Sarasota County | 64.7 |
| 32 | Hamilton County | 60.2 |
| 33 | Holmes County | 60 |
| 34 | Columbia County | 57.3 |
| 35 | Leon County | 56.4 |
| 35 | Miami-Dade County | 56.4 |
| 37 | Hillsborough County | 53.2 |
| 38 | Duval County | 47.9 |