Data / Rankings / Share of days with good air quality (US EPA AQI) / Counties in Florida

Counties in Florida by share of days with good air quality (US EPA AQI)

Putnam County had the highest share of days with good air quality (US EPA AQI) of 38 counties in 2022, at 99.4%. Duval County had the lowest, at 39.5%. The median was 75.9%. Source: EPA.

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Highest99.4Putnam County
Lowest39.5Duval County
Median75.938 counties

Map of counties, 2022

Alachua County: 80.7 %Baker County: 72.9 %Bay County: 59.7 %Brevard County: 78.9 %Broward County: 54 %Citrus County: 67 %Collier County: 79.8 %Columbia County: 64.5 %Duval County: 39.5 %Escambia County: 52.3 %Flagler County: 97.5 %Hamilton County: 56.1 %Highlands County: 96.6 %Hillsborough County: 47.9 %Holmes County: 55.9 %Indian River County: 97.8 %Lake County: 95.9 %Lee County: 78.8 %Leon County: 58 %Liberty County: 97.5 %Manatee County: 96.3 %Marion County: 71.3 %Martin County: 78.7 %Miami-Dade County: 71 %Okaloosa County: 91.2 %Orange County: 86.8 %Osceola County: 95.6 %Palm Beach County: 75.3 %Pasco County: 92 %Pinellas County: 61.9 %Polk County: 72.7 %Putnam County: 99.4 %St. Lucie County: 98.3 %Santa Rosa County: 65.5 %Sarasota County: 65.4 %Seminole County: 79.3 %Volusia County: 66.3 %Wakulla County: 76.4 %
  • Under 58
  • 58 to 67
  • 67 to 76
  • 76 to 80
  • 80 to 96
  • 96 and over
  • No data
%, 2022. Hatched areas have no value for this period. Source: Invokely calculation with data from EPA. Boundaries: U.S. Census Bureau cartographic boundary files.

All counties, 2022

Putnam County: 99.4 %Putnam County99.4St. Lucie County: 98.3 %St. Lucie County98.3Indian River County: 97.8 %Indian River County97.8Flagler County: 97.5 %Flagler County97.5Liberty County: 97.5 %Liberty County97.5Highlands County: 96.6 %Highlands County96.6Manatee County: 96.3 %Manatee County96.3Lake County: 95.9 %Lake County95.9Osceola County: 95.6 %Osceola County95.6Pasco County: 92 %Pasco County92Okaloosa County: 91.2 %Okaloosa County91.2Orange County: 86.8 %Orange County86.8Alachua County: 80.7 %Alachua County80.7Collier County: 79.8 %Collier County79.8Seminole County: 79.3 %Seminole County79.3Brevard County: 78.9 %Brevard County78.9Lee County: 78.8 %Lee County78.8Martin County: 78.7 %Martin County78.7Wakulla County: 76.4 %Wakulla County76.4Palm Beach County: 75.3 %Palm Beach County75.3Baker County: 72.9 %Baker County72.9Polk County: 72.7 %Polk County72.7Marion County: 71.3 %Marion County71.3Miami-Dade County: 71 %Miami-Dade County71Citrus County: 67 %Citrus County67Volusia County: 66.3 %Volusia County66.3Santa Rosa County: 65.5 %Santa Rosa County65.5Sarasota County: 65.4 %Sarasota County65.4Columbia County: 64.5 %Columbia County64.5Pinellas County: 61.9 %Pinellas County61.9Bay County: 59.7 %Bay County59.7Leon County: 58 %Leon County58Hamilton County: 56.1 %Hamilton County56.1Holmes County: 55.9 %Holmes County55.9Broward County: 54 %Broward County54Escambia County: 52.3 %Escambia County52.3Hillsborough County: 47.9 %Hillsborough County47.9Duval County: 39.5 %Duval County39.5Putnam County: 99.4 %Putnam County99.4St. Lucie County: 98.3 %St. Lucie County98.3Indian River County: 97.8 %Indian River County97.8Flagler County: 97.5 %Flagler County97.5Liberty County: 97.5 %Liberty County97.5Highlands County: 96.6 %Highlands County96.6Manatee County: 96.3 %Manatee County96.3Lake County: 95.9 %Lake County95.9Osceola County: 95.6 %Osceola County95.6Pasco County: 92 %Pasco County92Okaloosa County: 91.2 %Okaloosa County91.2Orange County: 86.8 %Orange County86.8Alachua County: 80.7 %Alachua County80.7Collier County: 79.8 %Collier County79.8Seminole County: 79.3 %Seminole County79.3Brevard County: 78.9 %Brevard County78.9Lee County: 78.8 %Lee County78.8Martin County: 78.7 %Martin County78.7Wakulla County: 76.4 %Wakulla County76.4Palm Beach County: 75.3 %Palm Beach County75.3Baker County: 72.9 %Baker County72.9Polk County: 72.7 %Polk County72.7Marion County: 71.3 %Marion County71.3Miami-Dade County: 71 %Miami-Dade County71Citrus County: 67 %Citrus County67Volusia County: 66.3 %Volusia County66.3Santa Rosa County: 65.5 %Santa Rosa County65.5Sarasota County: 65.4 %Sarasota County65.4Columbia County: 64.5 %Columbia County64.5Pinellas County: 61.9 %Pinellas County61.9Bay County: 59.7 %Bay County59.7Leon County: 58 %Leon County58Hamilton County: 56.1 %Hamilton County56.1Holmes County: 55.9 %Holmes County55.9Broward County: 54 %Broward County54Escambia County: 52.3 %Escambia County52.3Hillsborough County: 47.9 %Hillsborough County47.9Duval County: 39.5 %Duval County39.5
%. Source: Invokely calculation with data from EPA. Retrieved 2026-10-12.

Full ranking

RankCounties2022 (%)Change on 2021
1Putnam County99.4-0.6 pts
2St. Lucie County98.3+1.1 pts
3Indian River County97.8+2 pts
4Flagler County97.50 pts
4Liberty County97.5-0.9 pts
6Highlands County96.6+0.5 pts
7Manatee County96.3-1 pts
8Lake County95.9+1 pts
9Osceola County95.6+0.1 pts
10Pasco County92-2.8 pts
11Okaloosa County91.2-7.2 pts
12Orange County86.8-10.2 pts
13Alachua County80.7-3.9 pts
14Collier County79.8+3.2 pts
15Seminole County79.3+4.5 pts
16Brevard County78.9+9 pts
17Lee County78.8-3.1 pts
18Martin County78.7+9.9 pts
19Wakulla County76.4-1.4 pts
20Palm Beach County75.3+3.2 pts
21Baker County72.9-2.4 pts
22Polk County72.7+9.1 pts
23Marion County71.3+0.9 pts
24Miami-Dade County71+8 pts
25Citrus County67+1.4 pts
26Volusia County66.3+4.9 pts
27Santa Rosa County65.5-4.3 pts
28Sarasota County65.4-0.6 pts
29Columbia County64.5-0.3 pts
30Pinellas County61.9+1.1 pts
31Bay County59.7-2.8 pts
32Leon County58+4.8 pts
33Hamilton County56.1-5.5 pts
34Holmes County55.9-1 pts
35Broward County54+1.7 pts
36Escambia County52.3-2.5 pts
37Hillsborough County47.9+2.1 pts
38Duval County39.5+1.1 pts

Other periods

About this ranking

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.

United States counties with air quality monitors only, about 1,000 of some 3,100 in recent years; a county without monitors has no value. The number of days with an AQI differs between counties because some monitors run only in the ozone season.

Every value in the ranking comes from the same publisher and the same period, so the counties are compared on one definition. 4 counties with data in other periods have no value for 2022 and are left out rather than filled from another source. Equal values share a rank.

How to cite

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.

Citation styles

The publisher is the author. Invokely is named only as the place the figures were read, where a style asks for it.

APA 7

U.S. Environmental Protection Agency. (2026). EPA AirData annual AQI by county: good days as a share of days with an AQI, calculated with stored counts (Counties in Florida by share of days with good air quality (US EPA AQI), 2022) [Data set]. Retrieved October 12, 2026, from https://aqs.epa.gov/aqsweb/airdata/download_files.html#Annual

MLA 9

EPA AirData annual AQI by county: good days as a share of days with an AQI, calculated with stored counts, Counties in Florida by share of days with good air quality (US EPA AQI), 2022. U.S. Environmental Protection Agency, 13 July 2026, https://aqs.epa.gov/aqsweb/airdata/download_files.html#Annual. Invokely, https://invokely.ai/rankings/good-air-quality-days-share/florida-counties?period=2022. Accessed 12 Oct. 2026.

Chicago (author-date)

U.S. Environmental Protection Agency. 2026. EPA AirData annual AQI by county: good days as a share of days with an AQI, calculated with stored counts. Counties in Florida by share of days with good air quality (US EPA AQI), 2022. Dataset. Accessed October 12, 2026. https://aqs.epa.gov/aqsweb/airdata/download_files.html#Annual. Also distributed by Invokely, https://invokely.ai/rankings/good-air-quality-days-share/florida-counties?period=2022.

Harvard

U.S. Environmental Protection Agency (2026) EPA AirData annual AQI by county: good days as a share of days with an AQI, calculated with stored counts, Counties in Florida by share of days with good air quality (US EPA AQI), 2022 [Dataset]. Available at: https://aqs.epa.gov/aqsweb/airdata/download_files.html#Annual, via Invokely: https://invokely.ai/rankings/good-air-quality-days-share/florida-counties?period=2022 (Accessed: 12 October 2026).

BibTeX
@misc{environmental_counties_in_florida_by_2022,
  author = {{U.S. Environmental Protection Agency}},
  title = {{EPA AirData annual AQI by county: good days as a share of days with an AQI, calculated with stored counts: Counties in Florida by share of days with good air quality (US EPA AQI), 2022}},
  year = {2026},
  howpublished = {Data set},
  url = {https://aqs.epa.gov/aqsweb/airdata/download_files.html#Annual},
  urldate = {2026-10-12},
  note = {Accessed via Invokely, https://invokely.ai/rankings/good-air-quality-days-share/florida-counties?period=2022. Publisher attribution: 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.},
}
RIS
TY  - DATA
AU  - U.S. Environmental Protection Agency
TI  - EPA AirData annual AQI by county: good days as a share of days with an AQI, calculated with stored counts: Counties in Florida by share of days with good air quality (US EPA AQI), 2022
PY  - 2026
DA  - 2026/07/13
PB  - U.S. Environmental Protection Agency
DB  - Invokely
UR  - https://aqs.epa.gov/aqsweb/airdata/download_files.html#Annual
L2  - https://invokely.ai/rankings/good-air-quality-days-share/florida-counties?period=2022
Y2  - 2026/10/12
N1  - Accessed via Invokely, https://invokely.ai/rankings/good-air-quality-days-share/florida-counties?period=2022.
N1  - Publisher attribution: 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.
ER  -
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Rank Counties in Florida by share of days with good air quality (US EPA AQI) using official data, and cite the source.
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Questions

Which county has the highest share of days with good air quality (US EPA AQI)?

Putnam County, with 99.4% in 2022, according to EPA.

Which county has the lowest share of days with good air quality (US EPA AQI)?

Duval County, with 39.5% in 2022.

Where does this ranking come from?

Every value comes from one source and one period, so the places are comparable: 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. Retrieved 2026-10-12. 4 counties have no value for 2022 and are not ranked.

Share of days with good air quality (US EPA AQI): other rankings

Counties in Florida: more rankings