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

Median Air Quality Index (US EPA) in Georgetown County

Median Air Quality Index (US EPA) in Georgetown County was 14 in 2019, according to the U.S. Environmental Protection Agency. That is down 1 from 2018.

2019, index14
Change on 2018-1
Series high392004
Series low142019

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 Georgetown County, 1982 to 2019

1015202530354019821988199420002006201220191982: 25 index1983: 31 index1984: 32 index1985: 35 index1986: 30 index1987: 30 index1988: 28 index1989: 29 index1990: 31 index1991: 36 index1992: 30 index1993: 30 index1994: 29 index1995: 29 index1996: 31 index1997: 32 index1998: 30 index1999: 33 index2000: 34 index2001: 31 index2002: 31 index2003: 38 index2004: 39 index2005: 39 index2006: 31 index2007: 26 index2008: 25 index2009: 23 index2010: 22 index2011: 20 index2012: 17 index2013: 15 index2014: 17 index2015: 15 index2016: 16 index2017: 15 index2018: 15 index2019: 14 index1020304019821995200820191982: 25 index1983: 31 index1984: 32 index1985: 35 index1986: 30 index1987: 30 index1988: 28 index1989: 29 index1990: 31 index1991: 36 index1992: 30 index1993: 30 index1994: 29 index1995: 29 index1996: 31 index1997: 32 index1998: 30 index1999: 33 index2000: 34 index2001: 31 index2002: 31 index2003: 38 index2004: 39 index2005: 39 index2006: 31 index2007: 26 index2008: 25 index2009: 23 index2010: 22 index2011: 20 index2012: 17 index2013: 15 index2014: 17 index2015: 15 index2016: 16 index2017: 15 index2018: 15 index2019: 14 index
index. Source: EPA, EPA AirData annual AQI by county: median daily AQI. Retrieved 2026-10-12, published 2026-07-13.
All 38 values
Periodindex
201914
201815
201715
201616
201515
201417
201315
201217
201120
201022
200923
200825
200726
200631
200539
200439
200338
200231
200131
200034
199933
199830
199732
199631
199529
199429
199330
199230
199136
199031
198929
198828
198730
198630
198535
198432
198331
198225

Georgetown County compared with nearby places

Aiken County: 37 indexAnderson County: 42 indexBerkeley County: 31 indexCharleston County: 42 indexChesterfield County: 34 indexColleton County: 26 indexDarlington County: 38 indexEdgefield County: 43 indexFlorence County: 41 indexGeorgetown County: 14 indexGreenville County: 46 indexHorry County: 35 indexLexington County: 44 indexOconee County: 37 indexPickens County: 44 indexRichland County: 42 indexSpartanburg County: 45 indexYork County: 47 index
  • Under 34
  • 34 to 38
  • 38 to 42
  • 42 to 44
  • 44 and over
  • No data
Median Air Quality Index (US EPA), 2019, index. Georgetown 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), Georgetown County, 1982 to 2019) [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), Georgetown County, 1982 to 2019. 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/georgetown-county-south-carolina. 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), Georgetown County, 1982 to 2019. 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/georgetown-county-south-carolina.

Harvard

U.S. Environmental Protection Agency (2026) EPA AirData annual AQI by county: median daily AQI, Median Air Quality Index (US EPA), Georgetown County, 1982 to 2019 [Dataset]. Available at: https://aqs.epa.gov/aqsweb/airdata/download_files.html#Annual, via Invokely: https://invokely.ai/en/median-air-quality-index/georgetown-county-south-carolina (Accessed: 12 October 2026).

BibTeX
@misc{environmental_median_air_quality_index_2019,
  author = {{U.S. Environmental Protection Agency}},
  title = {{EPA AirData annual AQI by county: median daily AQI: Median Air Quality Index (US EPA), Georgetown County, 1982 to 2019}},
  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/georgetown-county-south-carolina. 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), Georgetown County, 1982 to 2019
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/georgetown-county-south-carolina
Y2  - 2026/10/12
N1  - Accessed via Invokely, https://invokely.ai/en/median-air-quality-index/georgetown-county-south-carolina.
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 Georgetown County?

Median Air Quality Index (US EPA) in Georgetown County was 14 in 2019, according to the U.S. Environmental Protection Agency. That is down 1 from 2018.

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 Georgetown County?

39 in 2004, the highest value since 1982 in this series.

Related statistics for Georgetown County

All statistics for Georgetown County | Georgetown County in figures