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

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

Highest daily Air Quality Index (US EPA) in Karnes County was 32 in 2025, according to the U.S. Environmental Protection Agency. That is down 1 from 2024. That is the 45th highest of 45 counties in 2025.

2025, index32
Change on 2024-1
Rank45th of 45Counties in Texas ranked
Series high342022
Series low262021

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 Karnes County, 2020 to 2025

26283032342020202120222023202420252020: 32 index2021: 26 index2022: 34 index2023: 29 index2024: 33 index2025: 32 index26283032342020202220252020: 32 index2021: 26 index2022: 34 index2023: 29 index2024: 33 index2025: 32 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
202532
202433
202329
202234
202126
202032

Karnes County compared with nearby places

Atascosa County: 92 indexBell County: 140 indexBexar County: 154 indexBowie County: 107 indexBrazoria County: 143 indexBrazos County: 78 indexBrewster County: 164 indexCameron County: 139 indexCollin County: 156 indexCulberson County: 159 indexDallas County: 304 indexDenton County: 179 indexEctor County: 183 indexEllis County: 93 indexEl Paso County: 2,122 indexGalveston County: 179 indexGregg County: 115 indexHarris County: 172 indexHarrison County: 100 indexHidalgo County: 140 indexHood County: 122 indexHunt County: 119 indexJefferson County: 160 indexJohnson County: 101 indexKarnes County: 32 indexKaufman County: 126 indexKleberg County: 107 indexLubbock County: 167 indexMcLennan County: 142 indexMaverick County: 90 indexMontgomery County: 133 indexNavarro County: 107 indexNueces County: 137 indexOrange County: 90 indexParker County: 147 indexPolk County: 105 indexPotter County: 85 indexRandall County: 97 indexRockwall County: 108 indexSmith County: 93 indexTarrant County: 162 indexTravis County: 129 indexVictoria County: 100 indexWebb County: 121 indexWilson County: 41 index
  • Under 90
  • 90 to 110
  • 110 to 130
  • 130 to 140
  • 140 to 160
  • 160 and over
  • No data
Highest daily Air Quality Index (US EPA), 2025, index. Karnes 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), Karnes County, 2020 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), Karnes County, 2020 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/karnes-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), Karnes County, 2020 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/karnes-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), Karnes County, 2020 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/karnes-county-texas (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), Karnes County, 2020 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/karnes-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), Karnes County, 2020 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/karnes-county-texas
Y2  - 2026/10/12
N1  - Accessed via Invokely, https://invokely.ai/en/highest-daily-air-quality-index/karnes-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 Karnes County?

Highest daily Air Quality Index (US EPA) in Karnes County was 32 in 2025, according to the U.S. Environmental Protection Agency. That is down 1 from 2024. That is the 45th highest of 45 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 Karnes County?

34 in 2022, the highest value since 2020 in this series.

Related statistics for Karnes County

All statistics for Karnes County | Karnes County in figures