Highest daily Air Quality Index (US EPA) in Georgetown County

Highest daily Air Quality Index (US EPA) in Georgetown County was 52 in 2019, according to the U.S. Environmental Protection Agency. That is up 8 from 2018.

2019, index52
Change on 2018+8
Series high1201999
Series low441982

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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Highest daily Air Quality Index (US EPA) in Georgetown County, 1982 to 2019

40608010012019821988199420002006201220191982: 44 index1983: 75 index1984: 63 index1985: 64 index1986: 54 index1987: 69 index1988: 59 index1989: 57 index1990: 57 index1991: 79 index1992: 92 index1993: 99 index1994: 83 index1995: 66 index1996: 119 index1997: 75 index1998: 60 index1999: 120 index2000: 104 index2001: 84 index2002: 87 index2003: 88 index2004: 110 index2005: 117 index2006: 99 index2007: 97 index2008: 66 index2009: 63 index2010: 85 index2011: 79 index2012: 47 index2013: 53 index2014: 53 index2015: 55 index2016: 62 index2017: 63 index2018: 44 index2019: 52 index40608010012019821995200820191982: 44 index1983: 75 index1984: 63 index1985: 64 index1986: 54 index1987: 69 index1988: 59 index1989: 57 index1990: 57 index1991: 79 index1992: 92 index1993: 99 index1994: 83 index1995: 66 index1996: 119 index1997: 75 index1998: 60 index1999: 120 index2000: 104 index2001: 84 index2002: 87 index2003: 88 index2004: 110 index2005: 117 index2006: 99 index2007: 97 index2008: 66 index2009: 63 index2010: 85 index2011: 79 index2012: 47 index2013: 53 index2014: 53 index2015: 55 index2016: 62 index2017: 63 index2018: 44 index2019: 52 index
index. Source: EPA, EPA AirData annual AQI by county: highest daily AQI. Retrieved 2026-10-12, published 2026-07-13.
All 38 values
Periodindex
201952
201844
201763
201662
201555
201453
201353
201247
201179
201085
200963
200866
200797
200699
2005117
2004110
200388
200287
200184
2000104
1999120
199860
199775
1996119
199566
199483
199399
199292
199179
199057
198957
198859
198769
198654
198564
198463
198375
198244

Georgetown County compared with nearby places

Aiken County: 97 indexAnderson County: 108 indexBerkeley County: 47 indexCharleston County: 76 indexChesterfield County: 77 indexColleton County: 41 indexDarlington County: 90 indexEdgefield County: 90 indexFlorence County: 73 indexGeorgetown County: 52 indexGreenville County: 97 indexHorry County: 77 indexLexington County: 69 indexOconee County: 74 indexPickens County: 84 indexRichland County: 93 indexSpartanburg County: 105 indexYork County: 133 index
  • Under 71
  • 71 to 77
  • 77 to 90
  • 90 to 97
  • 97 and over
  • No data
Highest daily 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

Highest daily Air Quality Index (AQI) value recorded in a US county during the year, from the EPA AirData annual summaries. Values above 500 are beyond the AQI scale and are published as EPA computes them.

A single day decides the value, so one wildfire or dust event can set it. Dust from the dry Owens Lake bed puts Inyo and Mono counties in California in the thousands. 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: highest 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: highest daily AQI (Highest daily 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: highest daily AQI, Highest daily 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/highest-daily-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: highest daily AQI. Highest daily 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/highest-daily-air-quality-index/georgetown-county-south-carolina.

Harvard

U.S. Environmental Protection Agency (2026) EPA AirData annual AQI by county: highest daily AQI, Highest daily 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/highest-daily-air-quality-index/georgetown-county-south-carolina (Accessed: 12 October 2026).

BibTeX
@misc{environmental_highest_daily_air_quality_2019,
  author = {{U.S. Environmental Protection Agency}},
  title = {{EPA AirData annual AQI by county: highest daily AQI: Highest daily 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/highest-daily-air-quality-index/georgetown-county-south-carolina. Publisher attribution: U.S. Environmental Protection Agency, Air Quality System, AirData. EPA AirData annual AQI by county: highest 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: highest daily AQI: Highest daily 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/highest-daily-air-quality-index/georgetown-county-south-carolina
Y2  - 2026/10/12
N1  - Accessed via Invokely, https://invokely.ai/en/highest-daily-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: highest 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 highest daily Air Quality Index (US EPA) in Georgetown County?

Highest daily Air Quality Index (US EPA) in Georgetown County was 52 in 2019, according to the U.S. Environmental Protection Agency. That is up 8 from 2018.

Where does this figure come from?

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

What was the highest highest daily Air Quality Index (US EPA) in Georgetown County?

120 in 1999, the highest value since 1982 in this series.

Related statistics for Georgetown County

All statistics for Georgetown County | Georgetown County in figures