SmogRank / World / United States / Ohio / April 2026
Most polluted cities in Ohio, United States, April 2026
28 cities in Ohio, United States ranked by their average PM2.5 over the 30 days. Worst: Wheelersburg at 10.3 µg/m³, #882 of 2,914 cities in the world. Cleanest: Lima at 3.3. 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%
- 2Middletown 0%
- 3Norwood 0%
- 4Westerville 0%
- 5Toledo 0%
- 6Sharonville 0%
- 7Cleveland 0%
- 7Steubenville 0%
- 9Cincinnati 0%
- 9Columbus 0%
- 9Springfield 0%
- 9Maumee 0%
- 13Oregon 0%
- 14Dayton 0%
- 15Lebanon 0%
- 16Canton 0%
- 16Dublin 0%
- 16Warren 0%
- 19Cleveland Heights 0%
- 20Dent 0%
- 20Warrensville Heights 0%
- 22Akron 0%
- 22Medina 0%
- 22Youngstown 0%
- 25Painesville 0%
- 26Shaker Heights 0%
- 27New Albany 0%
- 28Lima 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, April 2026, smogrank.com/us/region/ohio/history/2026-04 (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.