Data / Highest daily Air Quality Index (US EPA) / Fayette County

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

Highest daily Air Quality Index (US EPA) in Fayette County was 96 in 2018, according to the U.S. Environmental Protection Agency. That is up 12 from 2017.

2018, index96
Change on 2017+12
Series high992005
Series low772007

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 Fayette County, 2005 to 2018

758085909510020052007200920112013201520182005: 99 index2006: 85 index2007: 77 index2008: 88 index2009: 86 index2010: 78 index2011: 93 index2012: 77 index2013: 88 index2014: 90 index2015: 80 index2016: 86 index2017: 84 index2018: 96 index7080901002005201020182005: 99 index2006: 85 index2007: 77 index2008: 88 index2009: 86 index2010: 78 index2011: 93 index2012: 77 index2013: 88 index2014: 90 index2015: 80 index2016: 86 index2017: 84 index2018: 96 index
index. Source: EPA, EPA AirData annual AQI by county: highest daily AQI. Retrieved 2026-10-12, published 2026-07-13.
All 14 values
Periodindex
201896
201784
201686
201580
201490
201388
201277
201193
201078
200986
200888
200777
200685
200599

Fayette County compared with nearby places

Bell County: 136 indexBexar County: 166 indexBowie County: 106 indexBrazoria County: 166 indexBrewster County: 97 indexCameron County: 99 indexCollin County: 150 indexCulberson County: 81 indexDallas County: 161 indexDenton County: 151 indexEctor County: 92 indexEllis County: 120 indexEl Paso County: 164 indexFayette County: 96 indexGalveston County: 202 indexGregg County: 97 indexHarris County: 204 indexHarrison County: 111 indexHidalgo County: 115 indexHood County: 133 indexHunt County: 154 indexJefferson County: 154 indexJohnson County: 156 indexKaufman County: 122 indexKleberg County: 164 indexLubbock County: 134 indexMcLennan County: 98 indexMaverick County: 100 indexMontgomery County: 156 indexNavarro County: 117 indexNueces County: 99 indexOrange County: 122 indexParker County: 164 indexPolk County: 97 indexPotter County: 134 indexRandall County: 112 indexRockwall County: 136 indexSmith County: 112 indexTarrant County: 166 indexTravis County: 115 indexVictoria County: 112 indexWebb County: 107 index
  • Under 99
  • 99 to 110
  • 110 to 120
  • 120 to 150
  • 150 to 160
  • 160 and over
  • No data
Highest daily Air Quality Index (US EPA), 2018, index. Fayette 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), Fayette County, 2005 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), Fayette County, 2005 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/fayette-county-texas. 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), Fayette County, 2005 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/fayette-county-texas.

Harvard

U.S. Environmental Protection Agency (2026) EPA AirData annual AQI by county: highest daily AQI, Highest daily Air Quality Index (US EPA), Fayette County, 2005 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/fayette-county-texas (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), Fayette County, 2005 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/fayette-county-texas. 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), Fayette County, 2005 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/fayette-county-texas
Y2  - 2026/10/12
N1  - Accessed via Invokely, https://invokely.ai/en/highest-daily-air-quality-index/fayette-county-texas.
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 Fayette County?

Highest daily Air Quality Index (US EPA) in Fayette County was 96 in 2018, according to the U.S. Environmental Protection Agency. That is up 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 Fayette County?

99 in 2005, the highest value since 2005 in this series.

Related statistics for Fayette County

All statistics for Fayette County | Fayette County in figures