SmogRank / World / United States / Ohio / January 2024
Most polluted cities in Ohio, United States, January 2024
25 cities in Ohio, United States ranked by their average PM2.5 over the 31 days. Worst: Toledo at 10.4 µg/m³, #838 of 2,341 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.
- 1Toledo 0%
- 2Cleveland 0%
- 3Columbus 0%
- 4Dublin 0%
- 5Lima 0%
- 5Westerville 0%
- 7Middletown 0%
- 8Canton 0%
- 8Medina 0%
- 10Norwood 0%
- 10Steubenville 0%
- 10Warrensville Heights 0%
- 13Dent 0%
- 13Akron 0%
- 15Springfield 0%
- 16Dayton 0%
- 17Cincinnati 0%
- 18Cleveland Heights 0%
- 18Warren 0%
- 20Youngstown 0%
- 21Wheelersburg 0%
- 22New Albany 0%
- 23Lebanon 0%
- 24Sharonville 0%
- 25Painesville 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, January 2024 · All cities in United States, January 2024 · Ohio now
Use this board
SmogRank, most polluted cities in Ohio, United States, PM2.5, January 2024, smogrank.com/us/region/ohio/history/2024-01 (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.