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

Highest daily Air Quality Index (US EPA) in Lee County was 85 in 2018, according to the U.S. Environmental Protection Agency. That is down 12 from 2017.

2018, index85
Change on 2017-12
Series high1082014
Series low412013

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, 2013 to 2018

4060801001202013201420152016201720182013: 41 index2014: 108 index2015: 94 index2016: 100 index2017: 97 index2018: 85 index4060801001202013201520182013: 41 index2014: 108 index2015: 94 index2016: 100 index2017: 97 index2018: 85 index
index. Source: EPA, EPA AirData annual AQI by county: highest daily AQI. Retrieved 2026-10-12, published 2026-07-13.
All 6 values
Periodindex
201885
201797
2016100
201594
2014108
201341

Lee County compared with nearby places

Alexander County: 100 indexAvery County: 87 indexBuncombe County: 93 indexCaldwell County: 93 indexCarteret County: 77 indexCaswell County: 97 indexCatawba County: 80 indexCumberland County: 100 indexDavidson County: 79 indexDurham County: 100 indexEdgecombe County: 80 indexForsyth County: 101 indexGraham County: 93 indexGranville County: 93 indexGuilford County: 105 indexHaywood County: 105 indexHyde County: 59 indexJackson County: 108 indexJohnston County: 90 indexLee County: 85 indexLenoir County: 108 indexLincoln County: 90 indexMacon County: 93 indexMartin County: 80 indexMecklenburg County: 108 indexMitchell County: 80 indexMontgomery County: 98 indexNew Hanover County: 77 indexPerson County: 97 indexPitt County: 87 indexRockingham County: 90 indexRowan County: 74 indexSwain County: 81 indexUnion County: 122 indexWake County: 90 indexYancey County: 84 index
  • Under 80
  • 80 to 86
  • 86 to 92
  • 92 to 97
  • 97 to 100
  • 100 and over
  • No data
Highest daily Air Quality Index (US EPA), 2018, 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, 2013 to 2018) [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, 2013 to 2018. 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-north-carolina. 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, 2013 to 2018. 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-north-carolina.

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, 2013 to 2018 [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-north-carolina (Accessed: 12 October 2026).

BibTeX
@misc{environmental_highest_daily_air_quality_2018,
  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, 2013 to 2018}},
  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-north-carolina. 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, 2013 to 2018
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-north-carolina
Y2  - 2026/10/12
N1  - Accessed via Invokely, https://invokely.ai/en/highest-daily-air-quality-index/lee-county-north-carolina.
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 85 in 2018, according to the U.S. Environmental Protection Agency. That is down 12 from 2017.

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?

108 in 2014, the highest value since 2013 in this series.

Related statistics for Lee County

All statistics for Lee County | Lee County in figures