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

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

Highest daily Air Quality Index (US EPA) in Kosciusko County was 179 in 2003, according to the U.S. Environmental Protection Agency.

2003, index179
Series high2021981
Series low321982

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 Kosciusko County, 1980 to 2003

050100150200250198019811982199520031980: 179 index1981: 202 index1982: 32 index1995: 159 index2003: 179 index0501001502002501980198220031980: 179 index1981: 202 index1982: 32 index1995: 159 index2003: 179 index
index. Source: EPA, EPA AirData annual AQI by county: highest daily AQI. Retrieved 2026-10-12, published 2026-07-13.
All 5 values
Periodindex
2003179
1995159
198232
1981202
1980179

Kosciusko County compared with nearby places

Allen County: 197 indexBoone County: 190 indexCarroll County: 156 indexClark County: 177 indexDaviess County: 44 indexDelaware County: 182 indexDubois County: 144 indexElkhart County: 169 indexFloyd County: 179 indexGibson County: 161 indexGreene County: 179 indexHamilton County: 203 indexHancock County: 201 indexHendricks County: 156 indexHenry County: 104 indexHoward County: 138 indexHuntington County: 200 indexJackson County: 147 indexJohnson County: 164 indexKnox County: 164 indexKosciusko County: 179 indexLake County: 190 indexLaPorte County: 164 indexMadison County: 190 indexMarion County: 197 indexMorgan County: 156 indexPerry County: 52 indexPorter County: 161 indexPosey County: 166 indexPutnam County: 60 indexSt. Joseph County: 179 indexShelby County: 179 indexSpencer County: 107 indexTippecanoe County: 114 indexVanderburgh County: 159 indexVigo County: 161 indexWabash County: 195 indexWarrick County: 190 indexWashington County: 104 indexWhitley County: 59 index
  • Under 110
  • 110 to 160
  • 160 to 180
  • 180 to 190
  • 190 and over
  • No data
Highest daily Air Quality Index (US EPA), 2003, index. Kosciusko 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), Kosciusko County, 1980 to 2003) [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), Kosciusko County, 1980 to 2003. 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/kosciusko-county-indiana. 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), Kosciusko County, 1980 to 2003. 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/kosciusko-county-indiana.

Harvard

U.S. Environmental Protection Agency (2026) EPA AirData annual AQI by county: highest daily AQI, Highest daily Air Quality Index (US EPA), Kosciusko County, 1980 to 2003 [Dataset]. Available at: https://aqs.epa.gov/aqsweb/airdata/download_files.html#Annual, via Invokely: https://invokely.ai/en/highest-daily-air-quality-index/kosciusko-county-indiana (Accessed: 12 October 2026).

BibTeX
@misc{environmental_highest_daily_air_quality_2003,
  author = {{U.S. Environmental Protection Agency}},
  title = {{EPA AirData annual AQI by county: highest daily AQI: Highest daily Air Quality Index (US EPA), Kosciusko County, 1980 to 2003}},
  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/kosciusko-county-indiana. 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), Kosciusko County, 1980 to 2003
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/kosciusko-county-indiana
Y2  - 2026/10/12
N1  - Accessed via Invokely, https://invokely.ai/en/highest-daily-air-quality-index/kosciusko-county-indiana.
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 Kosciusko County?

Highest daily Air Quality Index (US EPA) in Kosciusko County was 179 in 2003, according to the U.S. Environmental Protection Agency.

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 Kosciusko County?

202 in 1981, the highest value since 1980 in this series.

Related statistics for Kosciusko County

All statistics for Kosciusko County | Kosciusko County in figures