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

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

Highest daily Air Quality Index (US EPA) in Raleigh County was 53 in 2015, according to the U.S. Environmental Protection Agency. That is up 21 from 2014.

2015, index53
Change on 2014+21
Series high1352001
Series low322014

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 Raleigh County, 1999 to 2015

2550751001251501999200220052008201120151999: 127 index2000: 102 index2001: 135 index2002: 130 index2003: 113 index2004: 95 index2005: 94 index2006: 108 index2007: 122 index2008: 88 index2009: 71 index2010: 88 index2011: 85 index2012: 68 index2013: 76 index2014: 32 index2015: 53 index0501001501999200520151999: 127 index2000: 102 index2001: 135 index2002: 130 index2003: 113 index2004: 95 index2005: 94 index2006: 108 index2007: 122 index2008: 88 index2009: 71 index2010: 88 index2011: 85 index2012: 68 index2013: 76 index2014: 32 index2015: 53 index
index. Source: EPA, EPA AirData annual AQI by county: highest daily AQI. Retrieved 2026-10-12, published 2026-07-13.
All 17 values
Periodindex
201553
201432
201376
201268
201185
201088
200971
200888
2007122
2006108
200594
200495
2003113
2002130
2001135
2000102
1999127

Raleigh County compared with nearby places

Berkeley County: 100 indexBrooke County: 92 indexCabell County: 101 indexGilmer County: 67 indexGreenbrier County: 71 indexHancock County: 112 indexHarrison County: 86 indexKanawha County: 167 indexMarion County: 90 indexMarshall County: 88 indexMonongalia County: 133 indexOhio County: 112 indexRaleigh County: 53 indexTucker County: 115 indexWood County: 129 index
  • Under 83
  • 83 to 91
  • 91 to 110
  • 110 to 120
  • 120 and over
  • No data
Highest daily Air Quality Index (US EPA), 2015, index. Raleigh 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), Raleigh County, 1999 to 2015) [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), Raleigh County, 1999 to 2015. 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/raleigh-county-west-virginia. 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), Raleigh County, 1999 to 2015. 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/raleigh-county-west-virginia.

Harvard

U.S. Environmental Protection Agency (2026) EPA AirData annual AQI by county: highest daily AQI, Highest daily Air Quality Index (US EPA), Raleigh County, 1999 to 2015 [Dataset]. Available at: https://aqs.epa.gov/aqsweb/airdata/download_files.html#Annual, via Invokely: https://invokely.ai/en/highest-daily-air-quality-index/raleigh-county-west-virginia (Accessed: 12 October 2026).

BibTeX
@misc{environmental_highest_daily_air_quality_2015,
  author = {{U.S. Environmental Protection Agency}},
  title = {{EPA AirData annual AQI by county: highest daily AQI: Highest daily Air Quality Index (US EPA), Raleigh County, 1999 to 2015}},
  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/raleigh-county-west-virginia. 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), Raleigh County, 1999 to 2015
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/raleigh-county-west-virginia
Y2  - 2026/10/12
N1  - Accessed via Invokely, https://invokely.ai/en/highest-daily-air-quality-index/raleigh-county-west-virginia.
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 Raleigh County?

Highest daily Air Quality Index (US EPA) in Raleigh County was 53 in 2015, according to the U.S. Environmental Protection Agency. That is up 21 from 2014.

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 Raleigh County?

135 in 2001, the highest value since 1999 in this series.

Related statistics for Raleigh County

All statistics for Raleigh County | Raleigh County in figures