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

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

Highest daily Air Quality Index (US EPA) in Garfield County was 88 in 2005, according to the U.S. Environmental Protection Agency. That is down 5 from 2004.

2005, index88
Change on 2004-5
Series high1152000
Series low441997

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 Garfield County, 1996 to 2005

406080100120199619982000200220051996: 49 index1997: 44 index1998: 48 index1999: 71 index2000: 115 index2001: 89 index2002: 114 index2003: 93 index2004: 93 index2005: 88 index4060801001201996200020051996: 49 index1997: 44 index1998: 48 index1999: 71 index2000: 115 index2001: 89 index2002: 114 index2003: 93 index2004: 93 index2005: 88 index
index. Source: EPA, EPA AirData annual AQI by county: highest daily AQI. Retrieved 2026-10-12, published 2026-07-13.
All 10 values
Periodindex
200588
200493
200393
2002114
200189
2000115
199971
199848
199744
199649

Garfield County compared with nearby places

Adair County: 122 indexCaddo County: 123 indexCanadian County: 172 indexCarter County: 86 indexCherokee County: 133 indexCleveland County: 136 indexComanche County: 150 indexCreek County: 177 indexCuster County: 51 indexDewey County: 154 indexEllis County: 75 indexGarfield County: 88 indexJefferson County: 169 indexKay County: 150 indexLincoln County: 147 indexLove County: 161 indexMcClain County: 156 indexMayes County: 150 indexMuskogee County: 106 indexOklahoma County: 159 indexOttawa County: 140 indexPittsburg County: 115 indexSequoyah County: 115 indexTulsa County: 166 index
  • Under 110
  • 110 to 130
  • 130 to 150
  • 150 to 160
  • 160 and over
  • No data
Highest daily Air Quality Index (US EPA), 2005, index. Garfield 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), Garfield County, 1996 to 2005) [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), Garfield County, 1996 to 2005. 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/garfield-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), Garfield County, 1996 to 2005. 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/garfield-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), Garfield County, 1996 to 2005 [Dataset]. Available at: https://aqs.epa.gov/aqsweb/airdata/download_files.html#Annual, via Invokely: https://invokely.ai/en/highest-daily-air-quality-index/garfield-county-oklahoma (Accessed: 12 October 2026).

BibTeX
@misc{environmental_highest_daily_air_quality_2005,
  author = {{U.S. Environmental Protection Agency}},
  title = {{EPA AirData annual AQI by county: highest daily AQI: Highest daily Air Quality Index (US EPA), Garfield County, 1996 to 2005}},
  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/garfield-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), Garfield County, 1996 to 2005
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/garfield-county-oklahoma
Y2  - 2026/10/12
N1  - Accessed via Invokely, https://invokely.ai/en/highest-daily-air-quality-index/garfield-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 Garfield County?

Highest daily Air Quality Index (US EPA) in Garfield County was 88 in 2005, according to the U.S. Environmental Protection Agency. That is down 5 from 2004.

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 Garfield County?

115 in 2000, the highest value since 1996 in this series.

Related statistics for Garfield County

All statistics for Garfield County | Garfield County in figures