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

Median Air Quality Index (US EPA) in Phillips County

Median Air Quality Index (US EPA) in Phillips County was 48 in 2012, according to the U.S. Environmental Protection Agency. That is down 5 from 2011.

2012, index48
Change on 2011-5
Series high601999
Series low181991

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 Phillips County, 1989 to 2012

1020304050601989199319972002200620121989: 22 index1990: 21 index1991: 18 index1992: 24 index1993: 23 index1994: 21 index1995: 21 index1996: 21 index1997: 20 index1999: 60 index2000: 59 index2001: 56 index2002: 53 index2003: 56 index2004: 53 index2005: 57 index2006: 54 index2007: 55 index2008: 53 index2009: 51 index2010: 55 index2011: 53 index2012: 48 index020406019891997200620121989: 22 index1990: 21 index1991: 18 index1992: 24 index1993: 23 index1994: 21 index1995: 21 index1996: 21 index1997: 20 index1999: 60 index2000: 59 index2001: 56 index2002: 53 index2003: 56 index2004: 53 index2005: 57 index2006: 54 index2007: 55 index2008: 53 index2009: 51 index2010: 55 index2011: 53 index2012: 48 index
index. Source: EPA, EPA AirData annual AQI by county: median daily AQI. Retrieved 2026-10-12, published 2026-07-13.
All 23 values
Periodindex
201248
201153
201055
200951
200853
200755
200654
200557
200453
200356
200253
200156
200059
199960
199720
199621
199521
199421
199323
199224
199118
199021
198922

Phillips County compared with nearby places

Arkansas County: 52 indexAshley County: 51 indexClark County: 35 indexCrittenden County: 44 indexFaulkner County: 52 indexGarland County: 53 indexJackson County: 48 indexNewton County: 43 indexPhillips County: 48 indexPolk County: 44 indexPope County: 46 indexPulaski County: 58 indexUnion County: 54 indexWashington County: 44 index
  • Under 44
  • 44 to 46
  • 46 to 50
  • 50 to 52
  • 52 and over
  • No data
Median Air Quality Index (US EPA), 2012, index. Phillips 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), Phillips County, 1989 to 2012) [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), Phillips County, 1989 to 2012. 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/phillips-county-arkansas. 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), Phillips County, 1989 to 2012. 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/phillips-county-arkansas.

Harvard

U.S. Environmental Protection Agency (2026) EPA AirData annual AQI by county: median daily AQI, Median Air Quality Index (US EPA), Phillips County, 1989 to 2012 [Dataset]. Available at: https://aqs.epa.gov/aqsweb/airdata/download_files.html#Annual, via Invokely: https://invokely.ai/en/median-air-quality-index/phillips-county-arkansas (Accessed: 12 October 2026).

BibTeX
@misc{environmental_median_air_quality_index_2012,
  author = {{U.S. Environmental Protection Agency}},
  title = {{EPA AirData annual AQI by county: median daily AQI: Median Air Quality Index (US EPA), Phillips County, 1989 to 2012}},
  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/phillips-county-arkansas. 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), Phillips County, 1989 to 2012
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/phillips-county-arkansas
Y2  - 2026/10/12
N1  - Accessed via Invokely, https://invokely.ai/en/median-air-quality-index/phillips-county-arkansas.
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 Phillips County?

Median Air Quality Index (US EPA) in Phillips County was 48 in 2012, according to the U.S. Environmental Protection Agency. That is down 5 from 2011.

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 Phillips County?

60 in 1999, the highest value since 1989 in this series.

Related statistics for Phillips County

All statistics for Phillips County | Phillips County in figures