Data / Highest daily Air Quality Index (US EPA) / Plaquemines Parish

Highest daily Air Quality Index (US EPA) in Plaquemines Parish

Highest daily Air Quality Index (US EPA) in Plaquemines Parish was 87 in 2005, according to the U.S. Environmental Protection Agency. That is up 10 from 2004. That is the 28th highest of 28 counties in 2005.

2005, index87
Change on 2004+10
Rank28th of 28Counties in Louisiana ranked
Series high872005
Series low642002

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 Plaquemines Parish, 2000 to 2005

606570758085902000200120022003200420052000: 68 index2001: 78 index2002: 64 index2003: 79 index2004: 77 index2005: 87 index607080902000200220052000: 68 index2001: 78 index2002: 64 index2003: 79 index2004: 77 index2005: 87 index
index. Source: EPA, EPA AirData annual AQI by county: highest daily AQI. Retrieved 2026-10-12, published 2026-07-13.
All 6 values
Periodindex
200587
200477
200379
200264
200178
200068

Plaquemines Parish compared with nearby places

Ascension Parish: 169 indexBeauregard Parish: 122 indexBossier Parish: 161 indexCaddo Parish: 154 indexCalcasieu Parish: 164 indexConcordia Parish: 95 indexEast Baton Rouge Parish: 192 indexGrant Parish: 119 indexIberville Parish: 200 indexJefferson Parish: 154 indexLafayette Parish: 159 indexLafourche Parish: 154 indexLivingston Parish: 156 indexOrleans Parish: 136 indexOuachita Parish: 154 indexPlaquemines Parish: 87 indexPointe Coupee Parish: 201 indexRapides Parish: 95 indexSt. Bernard Parish: 159 indexSt. Charles Parish: 136 indexSt. James Parish: 156 indexSt. John the Baptist Parish: 151 indexSt. Mary Parish: 136 indexSt. Tammany Parish: 92 indexTangipahoa Parish: 119 indexTerrebonne Parish: 93 indexWest Baton Rouge Parish: 179 indexWinn Parish: 99 index
  • Under 110
  • 110 to 140
  • 140 to 150
  • 150 to 160
  • 160 and over
  • No data
Highest daily Air Quality Index (US EPA), 2005, index. Plaquemines Parish 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), Plaquemines Parish, 2000 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), Plaquemines Parish, 2000 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/plaquemines-parish-louisiana. 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), Plaquemines Parish, 2000 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/plaquemines-parish-louisiana.

Harvard

U.S. Environmental Protection Agency (2026) EPA AirData annual AQI by county: highest daily AQI, Highest daily Air Quality Index (US EPA), Plaquemines Parish, 2000 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/plaquemines-parish-louisiana (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), Plaquemines Parish, 2000 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/plaquemines-parish-louisiana. 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), Plaquemines Parish, 2000 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/plaquemines-parish-louisiana
Y2  - 2026/10/12
N1  - Accessed via Invokely, https://invokely.ai/en/highest-daily-air-quality-index/plaquemines-parish-louisiana.
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 Plaquemines Parish?

Highest daily Air Quality Index (US EPA) in Plaquemines Parish was 87 in 2005, according to the U.S. Environmental Protection Agency. That is up 10 from 2004. That is the 28th highest of 28 counties in 2005.

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 Plaquemines Parish?

87 in 2005, the highest value since 2000 in this series.

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