Data / Share of days unhealthy for sensitive groups or worse (US EPA AQI) / Wayne County

Share of days unhealthy for sensitive groups or worse (US EPA AQI) in Wayne County

Share of days unhealthy for sensitive groups or worse (US EPA AQI) in Wayne County was 0% in 2015, according to EPA. That is unchanged from 2014.

20150%
Change on 20140 pts
Series high4.51999
Series low01990

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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Share of days unhealthy for sensitive groups or worse (US EPA AQI) in Wayne County, 1990 to 2015

01234519901994199820022006201020151990: 0 %1991: 0 %1992: 0 %1993: 0 %1994: 0 %1995: 0 %1996: 0 %1997: 0 %1998: 0 %1999: 4.5 %2000: 1.7 %2001: 0 %2002: 0.8 %2003: 0.9 %2004: 0.8 %2005: 0.9 %2006: 1 %2007: 0.8 %2008: 0.5 %2009: 0 %2010: 0 %2011: 0.6 %2012: 0 %2013: 0 %2014: 0 %2015: 0 %024619901999200820151990: 0 %1991: 0 %1992: 0 %1993: 0 %1994: 0 %1995: 0 %1996: 0 %1997: 0 %1998: 0 %1999: 4.5 %2000: 1.7 %2001: 0 %2002: 0.8 %2003: 0.9 %2004: 0.8 %2005: 0.9 %2006: 1 %2007: 0.8 %2008: 0.5 %2009: 0 %2010: 0 %2011: 0.6 %2012: 0 %2013: 0 %2014: 0 %2015: 0 %
%. Source: Invokely calculation with data from EPA. Retrieved 2026-10-12, published 2026-07-13.
All 26 values
Period%
20150
20140
20130
20120
20110.6
20100
20090
20080.5
20070.8
20061
20050.9
20040.8
20030.9
20020.8
20010
20001.7
19994.5
19980
19970
19960
19950
19940
19930
19920
19910
19900

Wayne County compared with nearby places

Alamance County: 0 %Alexander County: 0 %Avery County: 0 %Buncombe County: 0 %Caldwell County: 0 %Carteret County: 0 %Caswell County: 0 %Catawba County: 0 %Chatham County: 0 %Cumberland County: 0 %Davidson County: 0 %Duplin County: 0 %Durham County: 0 %Edgecombe County: 0 %Forsyth County: 0.8 %Franklin County: 0 %Gaston County: 0 %Graham County: 0 %Granville County: 0 %Guilford County: 0.3 %Haywood County: 0.4 %Hyde County: 0 %Jackson County: 0 %Johnston County: 0 %Lee County: 0 %Lenoir County: 0 %Lincoln County: 0.5 %McDowell County: 0 %Macon County: 0 %Martin County: 0 %Mecklenburg County: 2.5 %Mitchell County: 0 %Montgomery County: 0 %New Hanover County: 0 %Person County: 0 %Pitt County: 0 %Rockingham County: 0.5 %Rowan County: 0.3 %Swain County: 0 %Union County: 0.5 %Wake County: 0.8 %Watauga County: 0 %Wayne County: 0 %Yancey County: 0 %
  • Under 0.3
  • 0.3 and over
  • No data
Share of days unhealthy for sensitive groups or worse (US EPA AQI), 2015, %. Wayne 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

Days with a daily Air Quality Index above 100 (unhealthy for sensitive groups, unhealthy, very unhealthy or hazardous) as a percentage of the days of the year with an AQI in a US county. Calculated by Invokely from the day counts in the EPA AirData annual summaries; the counts are stored with each value.

Use the share rather than the number of days to compare counties, since the days with an AQI differ. 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: days with an AQI above 100 as a share of days with an AQI, calculated with stored counts. 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: days with an AQI above 100 as a share of days with an AQI, calculated with stored counts (Share of days unhealthy for sensitive groups or worse (US EPA AQI), Wayne County, 1990 to 2015) [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: days with an AQI above 100 as a share of days with an AQI, calculated with stored counts, Share of days unhealthy for sensitive groups or worse (US EPA AQI), Wayne County, 1990 to 2015. U.S. Environmental Protection Agency, 13 July 2026, https://aqs.epa.gov/aqsweb/airdata/download_files.html#Annual. Invokely, https://invokely.ai/en/unhealthy-air-quality-days-share/wayne-county-north-carolina. Accessed 12 Oct. 2026.

Chicago (author-date)

U.S. Environmental Protection Agency. 2026. EPA AirData annual AQI by county: days with an AQI above 100 as a share of days with an AQI, calculated with stored counts. Share of days unhealthy for sensitive groups or worse (US EPA AQI), Wayne County, 1990 to 2015. Dataset. Accessed October 12, 2026. https://aqs.epa.gov/aqsweb/airdata/download_files.html#Annual. Also distributed by Invokely, https://invokely.ai/en/unhealthy-air-quality-days-share/wayne-county-north-carolina.

Harvard

U.S. Environmental Protection Agency (2026) EPA AirData annual AQI by county: days with an AQI above 100 as a share of days with an AQI, calculated with stored counts, Share of days unhealthy for sensitive groups or worse (US EPA AQI), Wayne County, 1990 to 2015 [Dataset]. Available at: https://aqs.epa.gov/aqsweb/airdata/download_files.html#Annual, via Invokely: https://invokely.ai/en/unhealthy-air-quality-days-share/wayne-county-north-carolina (Accessed: 12 October 2026).

BibTeX
@misc{environmental_share_of_days_unhealthy_2015,
  author = {{U.S. Environmental Protection Agency}},
  title = {{EPA AirData annual AQI by county: days with an AQI above 100 as a share of days with an AQI, calculated with stored counts: Share of days unhealthy for sensitive groups or worse (US EPA AQI), Wayne County, 1990 to 2015}},
  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/unhealthy-air-quality-days-share/wayne-county-north-carolina. Publisher attribution: U.S. Environmental Protection Agency, Air Quality System, AirData. EPA AirData annual AQI by county: days with an AQI above 100 as a share of days with an AQI, calculated with stored counts. 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: days with an AQI above 100 as a share of days with an AQI, calculated with stored counts: Share of days unhealthy for sensitive groups or worse (US EPA AQI), Wayne County, 1990 to 2015
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/unhealthy-air-quality-days-share/wayne-county-north-carolina
Y2  - 2026/10/12
N1  - Accessed via Invokely, https://invokely.ai/en/unhealthy-air-quality-days-share/wayne-county-north-carolina.
N1  - Publisher attribution: U.S. Environmental Protection Agency, Air Quality System, AirData. EPA AirData annual AQI by county: days with an AQI above 100 as a share of days with an AQI, calculated with stored counts. https://aqs.epa.gov/aqsweb/airdata/download_files.html#Annual. Retrieved 2026-10-12.
ER  -
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Questions

What is the share of days unhealthy for sensitive groups or worse (US EPA AQI) in Wayne County?

Share of days unhealthy for sensitive groups or worse (US EPA AQI) in Wayne County was 0% in 2015, according to EPA. That is unchanged from 2014.

Where does this figure come from?

U.S. Environmental Protection Agency. EPA AirData annual AQI by county: days with an AQI above 100 as a share of days with an AQI, calculated with stored counts. Retrieved by Invokely on 2026-10-12.

What was the highest share of days unhealthy for sensitive groups or worse (US EPA AQI) in Wayne County?

4.5% in 1999, the highest value since 1990 in this series.

Related statistics for Wayne County

All statistics for Wayne County | Wayne County in figures