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

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

Highest daily Air Quality Index (US EPA) in Lawrence County was 47 in 1999, according to the U.S. Environmental Protection Agency. That is down 145 from 1998.

1999, index47
Change on 1998-145
Series high2041995
Series low471999

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 Lawrence County, 1986 to 1999

05010015020025019861988199019921994199619991986: 78 index1987: 71 index1988: 59 index1989: 62 index1990: 73 index1991: 159 index1992: 151 index1993: 159 index1994: 174 index1995: 204 index1996: 108 index1997: 108 index1998: 192 index1999: 47 index0501001502002501986199119991986: 78 index1987: 71 index1988: 59 index1989: 62 index1990: 73 index1991: 159 index1992: 151 index1993: 159 index1994: 174 index1995: 204 index1996: 108 index1997: 108 index1998: 192 index1999: 47 index
index. Source: EPA, EPA AirData annual AQI by county: highest daily AQI. Retrieved 2026-10-12, published 2026-07-13.
All 14 values
Periodindex
199947
1998192
1997108
1996108
1995204
1994174
1993159
1992151
1991159
199073
198962
198859
198771
198678

Lawrence County compared with nearby places

Bell County: 151 indexBoone County: 177 indexBoyd County: 187 indexBullitt County: 187 indexCampbell County: 166 indexCarter County: 190 indexChristian County: 204 indexDaviess County: 169 indexEdmonson County: 200 indexFayette County: 185 indexFloyd County: 50 indexFranklin County: 100 indexGraves County: 205 indexGreenup County: 201 indexHancock County: 190 indexHardin County: 192 indexHarlan County: 44 indexHenderson County: 185 indexJefferson County: 202 indexJessamine County: 177 indexKenton County: 177 indexLawrence County: 47 indexLivingston County: 206 indexMcCracken County: 192 indexMcLean County: 207 indexMadison County: 98 indexMarshall County: 59 indexMorgan County: 190 indexOldham County: 204 indexPerry County: 154 indexPike County: 171 indexPulaski County: 182 indexScott County: 190 indexSimpson County: 195 indexTrigg County: 200 indexWarren County: 114 indexWashington County: 204 indexWhitley County: 63 index
  • Under 100
  • 100 to 170
  • 170 to 190
  • 190 to 200
  • 200 and over
  • No data
Highest daily Air Quality Index (US EPA), 1999, index. Lawrence 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), Lawrence County, 1986 to 1999) [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), Lawrence County, 1986 to 1999. 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/lawrence-county-kentucky. 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), Lawrence County, 1986 to 1999. 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/lawrence-county-kentucky.

Harvard

U.S. Environmental Protection Agency (2026) EPA AirData annual AQI by county: highest daily AQI, Highest daily Air Quality Index (US EPA), Lawrence County, 1986 to 1999 [Dataset]. Available at: https://aqs.epa.gov/aqsweb/airdata/download_files.html#Annual, via Invokely: https://invokely.ai/en/highest-daily-air-quality-index/lawrence-county-kentucky (Accessed: 12 October 2026).

BibTeX
@misc{environmental_highest_daily_air_quality_1999,
  author = {{U.S. Environmental Protection Agency}},
  title = {{EPA AirData annual AQI by county: highest daily AQI: Highest daily Air Quality Index (US EPA), Lawrence County, 1986 to 1999}},
  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/lawrence-county-kentucky. 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), Lawrence County, 1986 to 1999
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/lawrence-county-kentucky
Y2  - 2026/10/12
N1  - Accessed via Invokely, https://invokely.ai/en/highest-daily-air-quality-index/lawrence-county-kentucky.
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 Lawrence County?

Highest daily Air Quality Index (US EPA) in Lawrence County was 47 in 1999, according to the U.S. Environmental Protection Agency. That is down 145 from 1998.

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 Lawrence County?

204 in 1995, the highest value since 1986 in this series.

Related statistics for Lawrence County

All statistics for Lawrence County | Lawrence County in figures