SmogRank / World / United States / Kentucky / August 2023
Most polluted cities in Kentucky, United States, August 2023
15 cities in Kentucky, United States ranked by their average PM2.5 over the 31 days. Worst: Jeffersontown at 11.9 µg/m³, #330 of 1,926 cities in the world. Cleanest: Oak Grove at 7.8. A city needs measurements on 70% of the days to be ranked.
Ranked by unhealthy days: the share of each city's measured days with a daily mean over 35.4 µg/m³ (US AQI 101+), Unhealthy for Sensitive Groups or worse on the US EPA's scale. Ties go to the higher average.
- 1Jeffersontown 0%
- 2Louisville 0%
- 3Highland Heights 0%
- 4Saint Matthews 0%
- 5Valley Station 0%
- 6Flatwoods 0%
- 7Elizabethtown 0%
- 8Ashland 0%
- 9Hazard 0%
- 10Paducah 0%
- 10Lexington-Fayette 0%
- 10Somerset 0%
- 13Middlesboro 0%
- 14Pikeville 0%
- 15Oak Grove 0%
The US EPA's Air Quality Index for PM2.5 (2024 breakpoints). Show values as: µg/m³ · US AQI · India AQI · China AQI · European AQI · UK DAQI · Canada AQHI+. About the scales
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SmogRank, most polluted cities in Kentucky, United States, PM2.5, August 2023, smogrank.com/us/region/kentucky/history/2023-08 (accessed 7 Oct 2026).
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