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

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

Highest daily Air Quality Index (US EPA) in Jackson County was 73 in 2021, according to the U.S. Environmental Protection Agency. That is up 2 from 2020.

2021, index73
Change on 2020+2
Series high1742000
Series low662019

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 Jackson County, 1999 to 2021

50751001251501751999200320072011201520211999: 159 index2000: 174 index2001: 169 index2002: 169 index2003: 166 index2004: 115 index2005: 108 index2006: 150 index2007: 147 index2008: 93 index2009: 87 index2010: 136 index2011: 126 index2012: 143 index2013: 119 index2014: 119 index2015: 100 index2016: 155 index2017: 100 index2018: 108 index2019: 66 index2020: 71 index2021: 73 index5010015020019992007201520211999: 159 index2000: 174 index2001: 169 index2002: 169 index2003: 166 index2004: 115 index2005: 108 index2006: 150 index2007: 147 index2008: 93 index2009: 87 index2010: 136 index2011: 126 index2012: 143 index2013: 119 index2014: 119 index2015: 100 index2016: 155 index2017: 100 index2018: 108 index2019: 66 index2020: 71 index2021: 73 index
index. Source: EPA, EPA AirData annual AQI by county: highest daily AQI. Retrieved 2026-10-12, published 2026-07-13.
All 23 values
Periodindex
202173
202071
201966
2018108
2017100
2016155
2015100
2014119
2013119
2012143
2011126
2010136
200987
200893
2007147
2006150
2005108
2004115
2003166
2002169
2001169
2000174
1999159

Jackson County compared with nearby places

Alexander County: 80 indexAvery County: 74 indexBuncombe County: 81 indexCaldwell County: 77 indexCarteret County: 97 indexCaswell County: 80 indexCatawba County: 94 indexCumberland County: 107 indexDavidson County: 97 indexDurham County: 90 indexEdgecombe County: 90 indexForsyth County: 124 indexGraham County: 90 indexGranville County: 67 indexGuilford County: 100 indexHaywood County: 93 indexHyde County: 56 indexJackson County: 73 indexJohnston County: 97 indexLenoir County: 97 indexLincoln County: 97 indexMacon County: 67 indexMartin County: 74 indexMecklenburg County: 128 indexMitchell County: 82 indexMontgomery County: 80 indexNew Hanover County: 93 indexNorthampton County: 94 indexPerson County: 90 indexPitt County: 81 indexRockingham County: 90 indexRowan County: 87 indexSwain County: 147 indexUnion County: 101 indexWake County: 96 indexYancey County: 90 index
  • Under 77
  • 77 to 82
  • 82 to 90
  • 90 to 95
  • 95 to 98
  • 98 and over
  • No data
Highest daily Air Quality Index (US EPA), 2021, index. Jackson 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), Jackson County, 1999 to 2021) [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), Jackson County, 1999 to 2021. 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/jackson-county-north-carolina. 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), Jackson County, 1999 to 2021. 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/jackson-county-north-carolina.

Harvard

U.S. Environmental Protection Agency (2026) EPA AirData annual AQI by county: highest daily AQI, Highest daily Air Quality Index (US EPA), Jackson County, 1999 to 2021 [Dataset]. Available at: https://aqs.epa.gov/aqsweb/airdata/download_files.html#Annual, via Invokely: https://invokely.ai/en/highest-daily-air-quality-index/jackson-county-north-carolina (Accessed: 12 October 2026).

BibTeX
@misc{environmental_highest_daily_air_quality_2021,
  author = {{U.S. Environmental Protection Agency}},
  title = {{EPA AirData annual AQI by county: highest daily AQI: Highest daily Air Quality Index (US EPA), Jackson County, 1999 to 2021}},
  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/jackson-county-north-carolina. 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), Jackson County, 1999 to 2021
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/jackson-county-north-carolina
Y2  - 2026/10/12
N1  - Accessed via Invokely, https://invokely.ai/en/highest-daily-air-quality-index/jackson-county-north-carolina.
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 Jackson County?

Highest daily Air Quality Index (US EPA) in Jackson County was 73 in 2021, according to the U.S. Environmental Protection Agency. That is up 2 from 2020.

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 Jackson County?

174 in 2000, the highest value since 1999 in this series.

Related statistics for Jackson County

All statistics for Jackson County | Jackson County in figures