Cleveland Air Quality in June
Across 2019–2025, Cleveland's June air quality had a median AQI of 62 (Moderate) over 210 monitored days in the Cleveland-Elyria, OH area. 12.4% of June days (26 of 210) reached Unhealthy for Sensitive Groups or worse, and fine particulate matter (PM2.5) set the daily AQI on 50.5% of days. The cleanest June on record here was 2021 (median AQI 62, 1 day above 100) and the worst was 2023 (median 90, 11 days above 100, peak AQI 285).
- Good: 21.4%
- Moderate: 66.2%
- Unhealthy for Sensitive Groups: 10.0%
- Unhealthy or worse: 2.4%
Reduce Indoor Ozone in Cleveland
Today's main pollutant in Cleveland is ground-level ozone (AQI 44). Important: standard HEPA filters do NOT remove ozone — only a purifier with a substantial activated-carbon bed adsorbs it. The biggest wins are cutting indoor sources (gas appliances, certain "ionizer" purifiers) and ventilating when outdoor ozone is low (early morning). A high-carbon unit helps with the gases and VOCs that linger indoors.
Recommended: Levoit Core 300 — True HEPA + activated carbon · CADR ~141 CFM · rooms up to 219 sq ft
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How is the air in Cleveland in June?
Moderate on a typical day: median AQI 62 across 2019–2025, with 12.4% of June days above AQI 100. Fine particulate matter (PM2.5) is the main driver.
- ✓21.4% of June days were Good (AQI 0–50), 66.2% Moderate (51–100).
- ✓26 days of 210 reached AQI 101+; the June peak was 285.
- ✓Best June: 2021; worst June: 2023.
Frequently asked questions
What is the air quality like in Cleveland in June?▾
Across 2019–2025, the median daily AQI in Cleveland in June was 62 (Moderate). 21.4% of days were Good, 66.2% Moderate, and 12.4% reached Unhealthy for Sensitive Groups or worse, based on 210 monitored days in EPA's Air Quality System.
Is June a good time for outdoor exercise in Cleveland?▾
A typical June day in Cleveland is Moderate (median AQI 62): outdoor exercise is acceptable for most people, but unusually sensitive individuals should watch for symptoms, and about 1 day in 8 of June days (12.4%) reached AQI 101+ — the level at which EPA advises people with asthma, children and older adults to shorten hard outdoor exertion.
Which pollutant causes Cleveland's June air quality problems?▾
Fine particulate matter (PM2.5) set the daily AQI on 50.5% of June days in Cleveland. The highest June AQI recorded in 2019–2025 was 285 (Very Unhealthy), in 2023.
Cleveland June air quality, year by year
Cleveland June air quality by year (Cleveland-Elyria, OH, EPA AQS daily AQI)
| Year | Days monitored | Median AQI | Days above 100 | Peak AQI | Main pollutant |
|---|---|---|---|---|---|
| 2019 | 30 | 58 | 3 | 115 | PM2.5 |
| 2020 | 30 | 53 | 2 | 112 | O3 |
| 2021cleanest | 30 | 62 | 1 | 101 | PM2.5 |
| 2022 | 30 | 58 | 4 | 156 | O3 |
| 2023worst | 30 | 90 | 11 | 285 | PM2.5 |
| 2024 | 30 | 61 | 3 | 112 | O3 |
| 2025 | 30 | 67 | 2 | 115 | PM2.5 |
What June air means in Cleveland
A typical June day in Cleveland is Moderate (median AQI 62): outdoor exercise is acceptable for most people, but unusually sensitive individuals should watch for symptoms, and about 1 day in 8 of June days (12.4%) reached AQI 101+ — the level at which EPA advises people with asthma, children and older adults to shorten hard outdoor exertion.
June's median AQI of 62 is above Cleveland's whole-year median of 55, making it one of the area's dirtier periods. Nationally, the median June AQI across every EPA metro area (100,635 metro-days, 2019–2025) is 46, so Cleveland runs above the national June norm; 12.4% of its June days topped AQI 100 versus 3.7% nationally (above average).
June is part of Cleveland's summer season (June, July, August); the summer page pools all three months.
Activity-specific thresholds: running, cycling, kids' sports.
Right now in Cleveland
The latest EPA AirNow observation puts Cleveland's AQI at 44 (O3). The figures above are multi-year month statistics, not today's reading.
View current Cleveland air quality →Source: EPA Air Quality System (AQS) pre-generated Daily AQI by CBSA files — daily AQI by CBSA (Cleveland-Elyria, OH), 2019–2025. Daily AQI per CBSA is the highest AQI reported by any monitor in the area that day; the defining parameter is the pollutant that set it. Month and season statistics pool every such day in the period across all years listed. Retrieved 2026-09-09.