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

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

Highest daily Air Quality Index (US EPA) in Crawford County was 112 in 2010, according to the U.S. Environmental Protection Agency. That is up 11 from 2009.

2010, index112
Change on 2009+11
Series high2001998
Series low1012009

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 Crawford County, 1990 to 2010

10012014016018020019901993199619992002200520101990: 169 index1991: 197 index1992: 174 index1993: 169 index1994: 174 index1995: 190 index1996: 105 index1997: 156 index1998: 200 index1999: 182 index2000: 195 index2001: 161 index2002: 182 index2003: 195 index2004: 147 index2005: 147 index2006: 147 index2007: 122 index2008: 115 index2009: 101 index2010: 112 index10012515017520019901997200420101990: 169 index1991: 197 index1992: 174 index1993: 169 index1994: 174 index1995: 190 index1996: 105 index1997: 156 index1998: 200 index1999: 182 index2000: 195 index2001: 161 index2002: 182 index2003: 195 index2004: 147 index2005: 147 index2006: 147 index2007: 122 index2008: 115 index2009: 101 index2010: 112 index
index. Source: EPA, EPA AirData annual AQI by county: highest daily AQI. Retrieved 2026-10-12, published 2026-07-13.
All 21 values
Periodindex
2010112
2009101
2008115
2007122
2006147
2005147
2004147
2003195
2002182
2001161
2000195
1999182
1998200
1997156
1996105
1995190
1994174
1993169
1992174
1991197
1990169

Crawford County compared with nearby places

Adams County: 98 indexAllen County: 154 indexAshtabula County: 156 indexAthens County: 119 indexButler County: 151 indexClark County: 136 indexClermont County: 154 indexClinton County: 133 indexColumbiana County: 58 indexCrawford County: 112 indexCuyahoga County: 155 indexDelaware County: 133 indexFayette County: 129 indexFranklin County: 156 indexGeauga County: 154 indexGreene County: 115 indexHamilton County: 172 indexHancock County: 39 indexJefferson County: 152 indexKnox County: 122 indexLake County: 159 indexLawrence County: 152 indexLicking County: 136 indexLorain County: 140 indexLucas County: 164 indexMadison County: 126 indexMahoning County: 140 indexMedina County: 161 indexMiami County: 133 indexMontgomery County: 140 indexNoble County: 136 indexPortage County: 126 indexPreble County: 136 indexScioto County: 84 indexStark County: 156 indexSummit County: 140 indexTrumbull County: 159 indexWarren County: 150 indexWashington County: 129 indexWood County: 105 index
  • Under 120
  • 120 to 130
  • 130 to 140
  • 140 to 150
  • 150 to 160
  • 160 and over
  • No data
Highest daily Air Quality Index (US EPA), 2010, index. Crawford 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), Crawford County, 1990 to 2010) [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), Crawford County, 1990 to 2010. 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/crawford-county-ohio. 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), Crawford County, 1990 to 2010. 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/crawford-county-ohio.

Harvard

U.S. Environmental Protection Agency (2026) EPA AirData annual AQI by county: highest daily AQI, Highest daily Air Quality Index (US EPA), Crawford County, 1990 to 2010 [Dataset]. Available at: https://aqs.epa.gov/aqsweb/airdata/download_files.html#Annual, via Invokely: https://invokely.ai/en/highest-daily-air-quality-index/crawford-county-ohio (Accessed: 12 October 2026).

BibTeX
@misc{environmental_highest_daily_air_quality_2010,
  author = {{U.S. Environmental Protection Agency}},
  title = {{EPA AirData annual AQI by county: highest daily AQI: Highest daily Air Quality Index (US EPA), Crawford County, 1990 to 2010}},
  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/crawford-county-ohio. 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), Crawford County, 1990 to 2010
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/crawford-county-ohio
Y2  - 2026/10/12
N1  - Accessed via Invokely, https://invokely.ai/en/highest-daily-air-quality-index/crawford-county-ohio.
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 Crawford County?

Highest daily Air Quality Index (US EPA) in Crawford County was 112 in 2010, according to the U.S. Environmental Protection Agency. That is up 11 from 2009.

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 Crawford County?

200 in 1998, the highest value since 1990 in this series.

Related statistics for Crawford County

All statistics for Crawford County | Crawford County in figures