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

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

Highest daily Air Quality Index (US EPA) in Lowndes County was 74 in 2009, according to the U.S. Environmental Protection Agency. That is down 19 from 2008.

2009, index74
Change on 2008-19
Series high1821988
Series low742009

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 Lowndes County, 1987 to 2009

507510012515017520019871999200120032005200720091987: 136 index1988: 182 index1999: 123 index2000: 116 index2001: 119 index2002: 122 index2003: 95 index2004: 103 index2005: 117 index2006: 104 index2007: 112 index2008: 93 index2009: 74 index501001502001987200220091987: 136 index1988: 182 index1999: 123 index2000: 116 index2001: 119 index2002: 122 index2003: 95 index2004: 103 index2005: 117 index2006: 104 index2007: 112 index2008: 93 index2009: 74 index
index. Source: EPA, EPA AirData annual AQI by county: highest daily AQI. Retrieved 2026-10-12, published 2026-07-13.
All 13 values
Periodindex
200974
200893
2007112
2006104
2005117
2004103
200395
2002122
2001119
2000116
1999123
1988182
1987136

Lowndes County compared with nearby places

Adams County: 93 indexBolivar County: 93 indexDeSoto County: 143 indexForrest County: 91 indexGrenada County: 75 indexHancock County: 119 indexHarrison County: 150 indexHinds County: 119 indexJackson County: 147 indexJones County: 93 indexLauderdale County: 80 indexLee County: 87 indexLowndes County: 74 indexYalobusha County: 84 index
  • Under 82
  • 82 to 91
  • 91 to 93
  • 93 to 130
  • 130 and over
  • No data
Highest daily Air Quality Index (US EPA), 2009, index. Lowndes 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), Lowndes County, 1987 to 2009) [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), Lowndes County, 1987 to 2009. 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/lowndes-county-mississippi. 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), Lowndes County, 1987 to 2009. 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/lowndes-county-mississippi.

Harvard

U.S. Environmental Protection Agency (2026) EPA AirData annual AQI by county: highest daily AQI, Highest daily Air Quality Index (US EPA), Lowndes County, 1987 to 2009 [Dataset]. Available at: https://aqs.epa.gov/aqsweb/airdata/download_files.html#Annual, via Invokely: https://invokely.ai/en/highest-daily-air-quality-index/lowndes-county-mississippi (Accessed: 12 October 2026).

BibTeX
@misc{environmental_highest_daily_air_quality_2009,
  author = {{U.S. Environmental Protection Agency}},
  title = {{EPA AirData annual AQI by county: highest daily AQI: Highest daily Air Quality Index (US EPA), Lowndes County, 1987 to 2009}},
  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/lowndes-county-mississippi. 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), Lowndes County, 1987 to 2009
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/lowndes-county-mississippi
Y2  - 2026/10/12
N1  - Accessed via Invokely, https://invokely.ai/en/highest-daily-air-quality-index/lowndes-county-mississippi.
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 Lowndes County?

Highest daily Air Quality Index (US EPA) in Lowndes County was 74 in 2009, according to the U.S. Environmental Protection Agency. That is down 19 from 2008.

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 Lowndes County?

182 in 1988, the highest value since 1987 in this series.

Related statistics for Lowndes County

All statistics for Lowndes County | Lowndes County in figures