SmogRank / World / United States / Kentucky / August 2025
Most polluted cities in Kentucky, United States, August 2025
17 cities in Kentucky, United States ranked by their average PM2.5 over the 31 days. Worst: Owensboro at 9.3 µg/m³, #1,357 of 2,841 cities in the world. Cleanest: Hazard at 6.0. 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.
- 1Owensboro 0%
- 2Flatwoods 0%
- 3Louisville 0%
- 4Valley Station 0%
- 5Ashland 0%
- 6Paducah 0%
- 7Jeffersontown 0%
- 8Saint Matthews 0%
- 9Pikeville 0%
- 10Middlesboro 0%
- 11Highland Heights 0%
- 12Oak Grove 0%
- 13Somerset 0%
- 14Elizabethtown 0%
- 15Lexington-Fayette 0%
- 15Nicholasville 0%
- 17Hazard 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 2025, smogrank.com/us/region/kentucky/history/2025-08 (accessed 7 Oct 2026).
You're welcome to reuse a single chart, image or figure with this citation and a link. Terms. Raw monitor readings in bulk are published by OpenAQ, under each provider's licence.