SmogRank / World / United States / Ohio / March 2024
Most polluted cities in Ohio, United States, March 2024
25 cities in Ohio, United States ranked by their average PM2.5 over the 31 days. Worst: Toledo at 8.8 µg/m³, #603 of 1,643 cities in the world. Cleanest: Sharonville at 4.2. A city needs measurements on 70% of the days to be ranked.
OpenAQ's archive, where our readings come from, has almost none from the United States for March 20, 2024: cities in the United States have it from the EPA's own records of the same monitors. Why.
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%
- 4Middletown 0%
- 5Norwood 0%
- 6Westerville 0%
- 7Cincinnati 0%
- 7Dent 0%
- 9Canton 0%
- 10Wheelersburg 0%
- 11Dayton 0%
- 11Springfield 0%
- 11Dublin 0%
- 14Lima 0%
- 15Akron 0%
- 16Medina 0%
- 17Steubenville 0%
- 18Warrensville Heights 0%
- 19Warren 0%
- 20Cleveland Heights 0%
- 20Youngstown 0%
- 22Lebanon 0%
- 23Painesville 0%
- 24New Albany 0%
- 25Sharonville 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, March 2024 · All cities in United States, March 2024 · Ohio now
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SmogRank, most polluted cities in Ohio, United States, PM2.5, March 2024, smogrank.com/us/region/ohio/history/2024-03 (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.