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

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

Highest daily Air Quality Index (US EPA) in Cherokee County was 71 in 2017, according to the U.S. Environmental Protection Agency. That is down 6 from 2016.

2017, index71
Change on 2016-6
Series high1901999
Series low712017

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 Cherokee County, 1999 to 2017

507510012515017520019992002200520082011201420171999: 190 index2000: 185 index2001: 143 index2002: 140 index2003: 151 index2004: 122 index2005: 133 index2006: 182 index2007: 129 index2008: 108 index2009: 105 index2010: 151 index2011: 143 index2012: 140 index2013: 101 index2014: 77 index2015: 93 index2016: 77 index2017: 71 index501001502001999200620171999: 190 index2000: 185 index2001: 143 index2002: 140 index2003: 151 index2004: 122 index2005: 133 index2006: 182 index2007: 129 index2008: 108 index2009: 105 index2010: 151 index2011: 143 index2012: 140 index2013: 101 index2014: 77 index2015: 93 index2016: 77 index2017: 71 index
index. Source: EPA, EPA AirData annual AQI by county: highest daily AQI. Retrieved 2026-10-12, published 2026-07-13.
All 19 values
Periodindex
201771
201677
201593
201477
2013101
2012140
2011143
2010151
2009105
2008108
2007129
2006182
2005133
2004122
2003151
2002140
2001143
2000185
1999190

Cherokee County compared with nearby places

Adair County: 97 indexBryan County: 93 indexCaddo County: 58 indexCanadian County: 105 indexCarter County: 80 indexCherokee County: 71 indexChoctaw County: 87 indexCleveland County: 105 indexComanche County: 115 indexCreek County: 97 indexCuster County: 88 indexDewey County: 134 indexGrady County: 20 indexJefferson County: 108 indexKay County: 90 indexLincoln County: 53 indexLove County: 151 indexMcClain County: 115 indexMayes County: 71 indexMuskogee County: 63 indexOklahoma County: 119 indexOsage County: 108 indexOttawa County: 94 indexPittsburg County: 100 indexSequoyah County: 74 indexTulsa County: 102 indexWashington County: 108 index
  • Under 72
  • 72 to 91
  • 91 to 100
  • 100 to 110
  • 110 and over
  • No data
Highest daily Air Quality Index (US EPA), 2017, index. Cherokee 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), Cherokee County, 1999 to 2017) [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), Cherokee County, 1999 to 2017. 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/cherokee-county-oklahoma. 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), Cherokee County, 1999 to 2017. 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/cherokee-county-oklahoma.

Harvard

U.S. Environmental Protection Agency (2026) EPA AirData annual AQI by county: highest daily AQI, Highest daily Air Quality Index (US EPA), Cherokee County, 1999 to 2017 [Dataset]. Available at: https://aqs.epa.gov/aqsweb/airdata/download_files.html#Annual, via Invokely: https://invokely.ai/en/highest-daily-air-quality-index/cherokee-county-oklahoma (Accessed: 12 October 2026).

BibTeX
@misc{environmental_highest_daily_air_quality_2017,
  author = {{U.S. Environmental Protection Agency}},
  title = {{EPA AirData annual AQI by county: highest daily AQI: Highest daily Air Quality Index (US EPA), Cherokee County, 1999 to 2017}},
  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/cherokee-county-oklahoma. 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), Cherokee County, 1999 to 2017
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/cherokee-county-oklahoma
Y2  - 2026/10/12
N1  - Accessed via Invokely, https://invokely.ai/en/highest-daily-air-quality-index/cherokee-county-oklahoma.
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 Cherokee County?

Highest daily Air Quality Index (US EPA) in Cherokee County was 71 in 2017, according to the U.S. Environmental Protection Agency. That is down 6 from 2016.

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 Cherokee County?

190 in 1999, the highest value since 1999 in this series.

Related statistics for Cherokee County

All statistics for Cherokee County | Cherokee County in figures