Data / Median Air Quality Index (US EPA) / Dubuque County

Median Air Quality Index (US EPA) in Dubuque County

Median Air Quality Index (US EPA) in Dubuque County was 23 in 1988, according to the U.S. Environmental Protection Agency. That is down 2 from 1987.

1988, index23
Change on 1987-2
Series high361980
Series low231988

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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Median Air Quality Index (US EPA) in Dubuque County, 1980 to 1988

2025303540198019821984198619881980: 36 index1981: 30 index1982: 28 index1983: 28 index1984: 30 index1985: 24 index1986: 24 index1987: 25 index1988: 23 index20253035401980198319881980: 36 index1981: 30 index1982: 28 index1983: 28 index1984: 30 index1985: 24 index1986: 24 index1987: 25 index1988: 23 index
index. Source: EPA, EPA AirData annual AQI by county: median daily AQI. Retrieved 2026-10-12, published 2026-07-13.
All 9 values
Periodindex
198823
198725
198624
198524
198430
198328
198228
198130
198036

Dubuque County compared with nearby places

Cerro Gordo County: 33 indexClinton County: 31 indexDelaware County: 17 indexDubuque County: 23 indexJohnson County: 32 indexLinn County: 36 indexPolk County: 30 indexPottawattamie County: 20 indexScott County: 37 indexWoodbury County: 27 index
  • Under 22
  • 22 to 29
  • 29 to 31
  • 31 to 34
  • 34 and over
  • No data
Median Air Quality Index (US EPA), 1988, index. Dubuque 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

Median of the daily Air Quality Index (AQI) values of a US county over the days of the year with an AQI, from the EPA AirData annual summaries.

More on how it is measured
  • The daily county AQI is the highest AQI among the monitors and pollutants reported that day (ozone, PM2.5, PM10, carbon monoxide and nitrogen dioxide).
  • Lower is cleaner: 0 to 50 is good, 51 to 100 moderate and above 100 unhealthy for sensitive groups.

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: median 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: median daily AQI (Median Air Quality Index (US EPA), Dubuque County, 1980 to 1988) [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: median daily AQI, Median Air Quality Index (US EPA), Dubuque County, 1980 to 1988. U.S. Environmental Protection Agency, 13 July 2026, https://aqs.epa.gov/aqsweb/airdata/download_files.html#Annual. Invokely, https://invokely.ai/en/median-air-quality-index/dubuque-county-iowa. Accessed 12 Oct. 2026.

Chicago (author-date)

U.S. Environmental Protection Agency. 2026. EPA AirData annual AQI by county: median daily AQI. Median Air Quality Index (US EPA), Dubuque County, 1980 to 1988. Dataset. Accessed October 12, 2026. https://aqs.epa.gov/aqsweb/airdata/download_files.html#Annual. Also distributed by Invokely, https://invokely.ai/en/median-air-quality-index/dubuque-county-iowa.

Harvard

U.S. Environmental Protection Agency (2026) EPA AirData annual AQI by county: median daily AQI, Median Air Quality Index (US EPA), Dubuque County, 1980 to 1988 [Dataset]. Available at: https://aqs.epa.gov/aqsweb/airdata/download_files.html#Annual, via Invokely: https://invokely.ai/en/median-air-quality-index/dubuque-county-iowa (Accessed: 12 October 2026).

BibTeX
@misc{environmental_median_air_quality_index_1988,
  author = {{U.S. Environmental Protection Agency}},
  title = {{EPA AirData annual AQI by county: median daily AQI: Median Air Quality Index (US EPA), Dubuque County, 1980 to 1988}},
  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/median-air-quality-index/dubuque-county-iowa. Publisher attribution: U.S. Environmental Protection Agency, Air Quality System, AirData. EPA AirData annual AQI by county: median 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: median daily AQI: Median Air Quality Index (US EPA), Dubuque County, 1980 to 1988
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/median-air-quality-index/dubuque-county-iowa
Y2  - 2026/10/12
N1  - Accessed via Invokely, https://invokely.ai/en/median-air-quality-index/dubuque-county-iowa.
N1  - Publisher attribution: U.S. Environmental Protection Agency, Air Quality System, AirData. EPA AirData annual AQI by county: median 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 median Air Quality Index (US EPA) in Dubuque County?

Median Air Quality Index (US EPA) in Dubuque County was 23 in 1988, according to the U.S. Environmental Protection Agency. That is down 2 from 1987.

Where does this figure come from?

U.S. Environmental Protection Agency. EPA AirData annual AQI by county: median daily AQI. Retrieved by Invokely on 2026-10-12.

What was the highest median Air Quality Index (US EPA) in Dubuque County?

36 in 1980, the highest value since 1980 in this series.

Related statistics for Dubuque County

All statistics for Dubuque County | Dubuque County in figures