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

Median Air Quality Index (US EPA) in Dawson County

Median Air Quality Index (US EPA) in Dawson County was 14 in 2016, according to the U.S. Environmental Protection Agency. That is down 4 from 2015.

2016, index14
Change on 2015-4
Series high382005
Series low142016

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 Dawson County, 1991 to 2016

1015202530354019911995199920032007201120161991: 27 index1992: 23 index1993: 33 index1994: 24 index1995: 27 index1996: 34 index1997: 29 index1998: 28 index1999: 35 index2000: 34 index2001: 34 index2002: 37 index2003: 33 index2004: 33 index2005: 38 index2006: 31 index2007: 26 index2008: 24 index2009: 18 index2010: 19 index2011: 21 index2012: 26 index2013: 19 index2014: 19 index2015: 18 index2016: 14 index1020304019912000200920161991: 27 index1992: 23 index1993: 33 index1994: 24 index1995: 27 index1996: 34 index1997: 29 index1998: 28 index1999: 35 index2000: 34 index2001: 34 index2002: 37 index2003: 33 index2004: 33 index2005: 38 index2006: 31 index2007: 26 index2008: 24 index2009: 18 index2010: 19 index2011: 21 index2012: 26 index2013: 19 index2014: 19 index2015: 18 index2016: 14 index
index. Source: EPA, EPA AirData annual AQI by county: median daily AQI. Retrieved 2026-10-12, published 2026-07-13.
All 26 values
Periodindex
201614
201518
201419
201319
201226
201121
201019
200918
200824
200726
200631
200538
200433
200333
200237
200134
200034
199935
199828
199729
199634
199527
199424
199333
199223
199127

Dawson County compared with nearby places

Cass County: 22 indexDawson County: 14 indexDouglas County: 45 indexHall County: 29 indexKnox County: 35 indexLancaster County: 37 indexSarpy County: 42 indexScotts Bluff County: 26 indexThomas County: 14 indexWashington County: 32 index
  • Under 20
  • 20 to 28
  • 28 to 33
  • 33 to 38
  • 38 and over
  • No data
Median Air Quality Index (US EPA), 2016, index. Dawson 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), Dawson County, 1991 to 2016) [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), Dawson County, 1991 to 2016. 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/dawson-county-nebraska. 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), Dawson County, 1991 to 2016. 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/dawson-county-nebraska.

Harvard

U.S. Environmental Protection Agency (2026) EPA AirData annual AQI by county: median daily AQI, Median Air Quality Index (US EPA), Dawson County, 1991 to 2016 [Dataset]. Available at: https://aqs.epa.gov/aqsweb/airdata/download_files.html#Annual, via Invokely: https://invokely.ai/en/median-air-quality-index/dawson-county-nebraska (Accessed: 12 October 2026).

BibTeX
@misc{environmental_median_air_quality_index_2016,
  author = {{U.S. Environmental Protection Agency}},
  title = {{EPA AirData annual AQI by county: median daily AQI: Median Air Quality Index (US EPA), Dawson County, 1991 to 2016}},
  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/dawson-county-nebraska. 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), Dawson County, 1991 to 2016
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/dawson-county-nebraska
Y2  - 2026/10/12
N1  - Accessed via Invokely, https://invokely.ai/en/median-air-quality-index/dawson-county-nebraska.
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 Dawson County?

Median Air Quality Index (US EPA) in Dawson County was 14 in 2016, according to the U.S. Environmental Protection Agency. That is down 4 from 2015.

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 Dawson County?

38 in 2005, the highest value since 1991 in this series.

Related statistics for Dawson County

All statistics for Dawson County | Dawson County in figures