Highest daily Air Quality Index (US EPA) in Lee County

Highest daily Air Quality Index (US EPA) in Lee County was 97 in 2025, according to the U.S. Environmental Protection Agency. That is up 17 from 2024. That is the 15th highest of 38 counties in 2025.

2025, index97
Change on 2024+17
Series high1741998
Series low471988

Next release: Tuesday, 13 July 2027, estimated by Invokely from past publication dates (low confidence), not announced by the publisher. Release calendar

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Highest daily Air Quality Index (US EPA) in Lee County, 1980 to 2025

050100150200198019901996200220082014202020251980: 67 index1981: 90 index1982: 90 index1983: 71 index1988: 47 index1989: 154 index1990: 105 index1991: 119 index1992: 126 index1993: 108 index1994: 150 index1995: 115 index1996: 136 index1997: 136 index1998: 174 index1999: 156 index2000: 172 index2001: 115 index2002: 97 index2003: 156 index2004: 136 index2005: 140 index2006: 126 index2007: 122 index2008: 119 index2009: 87 index2010: 101 index2011: 90 index2012: 98 index2013: 93 index2014: 93 index2015: 90 index2016: 105 index2017: 90 index2018: 106 index2019: 108 index2020: 100 index2021: 97 index2022: 80 index2023: 101 index2024: 80 index2025: 97 index05010015020019801998201220251980: 67 index1981: 90 index1982: 90 index1983: 71 index1988: 47 index1989: 154 index1990: 105 index1991: 119 index1992: 126 index1993: 108 index1994: 150 index1995: 115 index1996: 136 index1997: 136 index1998: 174 index1999: 156 index2000: 172 index2001: 115 index2002: 97 index2003: 156 index2004: 136 index2005: 140 index2006: 126 index2007: 122 index2008: 119 index2009: 87 index2010: 101 index2011: 90 index2012: 98 index2013: 93 index2014: 93 index2015: 90 index2016: 105 index2017: 90 index2018: 106 index2019: 108 index2020: 100 index2021: 97 index2022: 80 index2023: 101 index2024: 80 index2025: 97 index
index. Source: EPA, EPA AirData annual AQI by county: highest daily AQI. Retrieved 2026-10-12, published 2026-07-13.
All 42 values
Periodindex
202597
202480
2023101
202280
202197
2020100
2019108
2018106
201790
2016105
201590
201493
201393
201298
201190
2010101
200987
2008119
2007122
2006126
2005140
2004136
2003156
200297
2001115
2000172
1999156
1998174
1997136
1996136
1995115
1994150
1993108
1992126
1991119
1990105
1989154
198847
198371
198290
198190
198067

Lee County compared with nearby places

Alachua County: 69 indexBaker County: 155 indexBay County: 92 indexBrevard County: 80 indexBroward County: 93 indexCitrus County: 125 indexCollier County: 71 indexColumbia County: 80 indexDuval County: 136 indexEscambia County: 104 indexFlagler County: 77 indexHamilton County: 72 indexHighlands County: 80 indexHillsborough County: 122 indexHolmes County: 79 indexIndian River County: 87 indexLake County: 112 indexLee County: 97 indexLeon County: 140 indexLiberty County: 77 indexManatee County: 97 indexMarion County: 101 indexMartin County: 74 indexMiami-Dade County: 113 indexOkaloosa County: 84 indexOrange County: 105 indexOsceola County: 105 indexPalm Beach County: 87 indexPasco County: 115 indexPinellas County: 129 indexPolk County: 100 indexPutnam County: 69 indexSt. Lucie County: 67 indexSanta Rosa County: 80 indexSarasota County: 84 indexSeminole County: 97 indexVolusia County: 90 indexWakulla County: 80 index
  • Under 77
  • 77 to 80
  • 80 to 91
  • 91 to 100
  • 100 to 110
  • 110 and over
  • No data
Highest daily Air Quality Index (US EPA), 2025, index. Lee County is outlined. Same source and period for every area shown. Source: U.S. Environmental Protection Agency. Boundaries: U.S. Census Bureau cartographic boundary files.

Rankings

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.

A single day decides the value, so one wildfire or dust event can set it. Dust from the dry Owens Lake bed puts Inyo and Mono counties in California in the thousands. 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.

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How to cite

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.

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: highest daily AQI (Highest daily Air Quality Index (US EPA), Lee County, 1980 to 2025) [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: highest daily AQI, Highest daily Air Quality Index (US EPA), Lee County, 1980 to 2025. U.S. Environmental Protection Agency, 13 July 2026, https://aqs.epa.gov/aqsweb/airdata/download_files.html#Annual. Invokely, https://invokely.ai/en/highest-daily-air-quality-index/lee-county-florida. Accessed 12 Oct. 2026.

Chicago (author-date)

U.S. Environmental Protection Agency. 2026. EPA AirData annual AQI by county: highest daily AQI. Highest daily Air Quality Index (US EPA), Lee County, 1980 to 2025. Dataset. Accessed October 12, 2026. https://aqs.epa.gov/aqsweb/airdata/download_files.html#Annual. Also distributed by Invokely, https://invokely.ai/en/highest-daily-air-quality-index/lee-county-florida.

Harvard

U.S. Environmental Protection Agency (2026) EPA AirData annual AQI by county: highest daily AQI, Highest daily Air Quality Index (US EPA), Lee County, 1980 to 2025 [Dataset]. Available at: https://aqs.epa.gov/aqsweb/airdata/download_files.html#Annual, via Invokely: https://invokely.ai/en/highest-daily-air-quality-index/lee-county-florida (Accessed: 12 October 2026).

BibTeX
@misc{environmental_highest_daily_air_quality_2025,
  author = {{U.S. Environmental Protection Agency}},
  title = {{EPA AirData annual AQI by county: highest daily AQI: Highest daily Air Quality Index (US EPA), Lee County, 1980 to 2025}},
  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/en/highest-daily-air-quality-index/lee-county-florida. Publisher attribution: 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.},
}
RIS
TY  - DATA
AU  - U.S. Environmental Protection Agency
TI  - EPA AirData annual AQI by county: highest daily AQI: Highest daily Air Quality Index (US EPA), Lee County, 1980 to 2025
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/en/highest-daily-air-quality-index/lee-county-florida
Y2  - 2026/10/12
N1  - Accessed via Invokely, https://invokely.ai/en/highest-daily-air-quality-index/lee-county-florida.
N1  - Publisher attribution: 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.
ER  - 
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Questions

What is the highest daily Air Quality Index (US EPA) in Lee County?

Highest daily Air Quality Index (US EPA) in Lee County was 97 in 2025, according to the U.S. Environmental Protection Agency. That is up 17 from 2024. That is the 15th highest of 38 counties in 2025.

Where does this figure come from?

U.S. Environmental Protection Agency. EPA AirData annual AQI by county: highest daily AQI. Retrieved by Invokely on 2026-10-12.

What was the highest highest daily Air Quality Index (US EPA) in Lee County?

174 in 1998, the highest value since 1980 in this series.

Related statistics for Lee County

All statistics for Lee County | Lee County in figures