SmogRank / World / United States / Ohio / October 2023
Most polluted cities in Ohio, United States, October 2023
25 cities in Ohio, United States ranked by their average PM2.5 over the 31 days. Worst: Dublin at 8.7 µg/m³, #545 of 1,965 cities in the world. Cleanest: Toledo at 3.9. 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.
- 1Dublin 0%
- 2Columbus 0%
- 3Cleveland 0%
- 4Middletown 0%
- 5Norwood 0%
- 6Springfield 0%
- 7Cincinnati 0%
- 7Dayton 0%
- 7Westerville 0%
- 10Youngstown 0%
- 11Canton 0%
- 12Warren 0%
- 13Dent 0%
- 13Akron 0%
- 13Steubenville 0%
- 16Painesville 0%
- 17Sharonville 0%
- 17Wheelersburg 0%
- 19Medina 0%
- 20Lebanon 0%
- 21Warrensville Heights 0%
- 22Cleveland Heights 0%
- 23Lima 0%
- 24New Albany 0%
- 25Toledo 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 2023, smogrank.com/us/region/ohio/history/2023-10 (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.