SmogRank / World / United States / Ohio / October 2024
Most polluted cities in Ohio, United States, October 2024
26 cities in Ohio, United States ranked by their average PM2.5 over the 31 days. Worst: Columbus at 14.9 µg/m³, #245 of 1,966 cities in the world. Cleanest: Painesville at 4.9. 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.
- 1Columbus 0%
- 2Middletown 0%
- 3Sharonville 0%
- 4Oregon 0%
- 5Canton 0%
- 6Toledo 0%
- 7Norwood 0%
- 7Westerville 0%
- 9Dayton 0%
- 10Warren 0%
- 11Springfield 0%
- 12Cincinnati 0%
- 12Dent 0%
- 14Steubenville 0%
- 15Dublin 0%
- 16Cleveland 0%
- 17Akron 0%
- 18Maumee 0%
- 19Wheelersburg 0%
- 20Youngstown 0%
- 21Lebanon 0%
- 22Medina 0%
- 23Lima 0%
- 24Cleveland Heights 0%
- 24Warrensville Heights 0%
- 26Painesville 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 Ohio, United States, PM2.5, October 2024, smogrank.com/us/region/ohio/history/2024-10 (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.