SmogRank / World / United States / Ohio / April 2025
Most polluted cities in Ohio, United States, April 2025
27 cities in Ohio, United States ranked by their average PM2.5 over the 30 days. Worst: Oregon at 8.1 µg/m³, #1,707 of 2,896 cities in the world. Cleanest: New Albany at 4.5. 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.
- 1Oregon 0%
- 2Middletown 0%
- 3Columbus 0%
- 4Norwood 0%
- 5Wheelersburg 0%
- 5Steubenville 0%
- 7Dayton 0%
- 7Dent 0%
- 7Springfield 0%
- 7Canton 0%
- 7Cleveland 0%
- 12Cincinnati 0%
- 12Maumee 0%
- 12Westerville 0%
- 15Lebanon 0%
- 16Warren 0%
- 17Akron 0%
- 17Dublin 0%
- 19Toledo 0%
- 20Youngstown 0%
- 21Lima 0%
- 22Cleveland Heights 0%
- 22Warrensville Heights 0%
- 24Medina 0%
- 24Painesville 0%
- 26Sharonville 0%
- 27New Albany 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, April 2025 · All cities in United States, April 2025 · Ohio now
Use this board
SmogRank, most polluted cities in Ohio, United States, PM2.5, April 2025, smogrank.com/us/region/ohio/history/2025-04 (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.