SmogRank / United States / Ohio / Cleveland
Cleveland, month by month
Cleveland has a measured daily mean on 1,365 days since 1 January 2023. Its worst month was June 2023, at 90 US AQI (30.0 µg/m³), 90th of 1,603 cities on that month's world ranking. Its cleanest was May 2025, at 33 US AQI (5.9 µg/m³). 2025 averaged 51 US AQI (9.2 µg/m³), against 49 US AQI (8.9 µg/m³) in 2024.
Every month since 2023
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
Cleveland's worst months
| Month | US AQI | World rank | Episode |
|---|---|---|---|
| June 2023 | 9030.0 µg/m³ | 90thof 1,603 | Eastern United States and Canada, June and July 2023 United States and Canada, June 2023and 1 more |
| July 2026 | 8426.9 µg/m³ | 185thof 2,784 | Northern United States and Canada, July 2026 North-eastern United States, June and July 2026 |
| July 2023 | 6114.3 µg/m³ | 183rdof 1,432 | United States and Canada, July 2023 North-eastern United States, 4 to 5 July 2023and 1 more |
| July 2025 | 5913.5 µg/m³ | 550thof 2,889 | North-eastern United States and Canada, 29 July to 9 August 2025 Northern United States and Canada, July 2025and 1 more |
| June 2025 | 5913.4 µg/m³ | 612thof 2,508 | Northern United States and Canada, May and June 2025 |
| February 2026 | 5812.9 µg/m³ | 928thof 2,866 | North-eastern United States and Canada, 9 to 10 February 2026 |
Monthly means over the days measured; finished months only. World rank: its place on that month's world ranking of every city with enough days. Each month opens that ranking.
Cleveland's worst days
| Day | US AQI | Episode |
|---|---|---|
| 16 Jul 2026 | 279204.0 µg/m³ | Northern United States and Canada, July 2026 |
| 17 Jul 2026 | 251175.5 µg/m³ | Northern United States and Canada, July 2026 |
| 28 Jun 2023 | 235160.0 µg/m³ | Eastern United States and Canada, June and July 2023 |
| 29 Jun 2023 | 17183.6 µg/m³ | Eastern United States and Canada, June and July 2023 |
| 17 Jul 2023 | 15561.3 µg/m³ | United States and Canada, July 2023 |
| 7 Jun 2023 | 14954.9 µg/m³ | Eastern United States and Canada, May and June 2023 |
| 27 Jun 2023 | 14151.7 µg/m³ | Eastern United States and Canada, June and July 2023 |
| 6 Jun 2023 | 11942.8 µg/m³ | Eastern United States and Canada, May and June 2023 |
| 8 Jun 2023 | 11742.2 µg/m³ | Eastern United States and Canada, May and June 2023 |
| 17 Jun 2023 | 11340.4 µg/m³ | United States and Canada, June 2023 |
Daily means, the highest since 1 Jan 2023; the WHO's daily guideline is 15 µg/m³. Each date opens that day's world ranking, and each episode the bad-air spell it was part of.
Use this history
SmogRank, PM2.5 monthly and daily means, Cleveland, United States, 1 Jan 2023 – 11 Oct 2026. Monitor data from AirNow, via OpenAQ and from the publisher directly; sources listed at smogrank.com/sources. smogrank.com/us/cleveland/history (accessed 12 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.
Cleveland now: the last 24 hours, its ranks today and the last 12 months day by day.
Updated 2026-10-12 21:07 UTC. Values are PM2.5 (fine particles), the median of each city's monitors, as the US AQI PM2.5 sub-index. Some low-cost readings: Sensor.Community, ODbL (data and licence). Some readings: Uzhydromet (Uzbekistan's Hydrometeorological Service); Department of Environment, Nepal; Vietnam's government monitors; Aurassure; Umhverfisstofnun (Environment Agency of Iceland); RMCAB (Secretaría Distrital de Ambiente, Bogotá); Love My Air (City and County of Denver), no reuse terms published (why we use them).