SmogRank / World / United States / Kentucky / August 2026
Most polluted cities in Kentucky, United States, August 2026
17 cities in Kentucky, United States ranked by their average PM2.5 over the 31 days. Worst: Flatwoods at 9.8 µg/m³, #927 of 2,866 cities in the world. Cleanest: Hazard at 6.4. 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.
- 1Flatwoods 0%
- 2Louisville 0%
- 3Valley Station 0%
- 4Saint Matthews 0%
- 5Jeffersontown 0%
- 5Somerset 0%
- 7Owensboro 0%
- 8Middlesboro 0%
- 9Paducah 0%
- 10Elizabethtown 0%
- 10Lexington-Fayette 0%
- 12Oak Grove 0%
- 13Nicholasville 0%
- 14Ashland 0%
- 15Highland Heights 0%
- 16Pikeville 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
All cities in the world, August 2026 · All cities in United States, August 2026 · Kentucky now
Use this board
SmogRank, most polluted cities in Kentucky, United States, PM2.5, August 2026, smogrank.com/us/region/kentucky/history/2026-08 (accessed 6 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.