SmogRank / World / United States / Ohio / December 2025
Most polluted cities in Ohio, United States, December 2025
28 cities in Ohio, United States ranked by their average PM2.5 over the 31 days. Worst: Wheelersburg at 13.0 µg/m³, #860 of 2,960 cities in the world. Cleanest: Painesville at 7.0. 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.
- 1Wheelersburg 0%
- 2Westerville 0%
- 3Middletown 0%
- 4Norwood 0%
- 5Oregon 0%
- 6Maumee 0%
- 7Cincinnati 0%
- 7Dublin 0%
- 9Columbus 0%
- 10Dayton 0%
- 10Toledo 0%
- 12Cleveland 0%
- 13Akron 0%
- 13Steubenville 0%
- 15Lebanon 0%
- 15Springfield 0%
- 15Canton 0%
- 15Medina 0%
- 19Warren 0%
- 20New Albany 0%
- 21Warrensville Heights 0%
- 22Shaker Heights 0%
- 23Youngstown 0%
- 24Sharonville 0%
- 25Cleveland Heights 0%
- 25Lima 0%
- 27Dent 0%
- 28Painesville 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, December 2025, smogrank.com/us/region/ohio/history/2025-12 (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.