Cleveland Air Quality in Spring
Across 2019–2025, Cleveland's spring (March–May) air quality had a median AQI of 53 (Moderate) over 644 monitored days in the Cleveland-Elyria, OH area. 1.6% of spring days (10 of 644) reached Unhealthy for Sensitive Groups or worse, and fine particulate matter (PM2.5) set the daily AQI on 54.0% of days. The cleanest spring on record here was 2022 (median AQI 51, 0 days above 100) and the worst was 2021 (median 54, 4 days above 100, peak AQI 115).
- Good: 44.4%
- Moderate: 54.0%
- Unhealthy for Sensitive Groups: 1.6%
- Unhealthy or worse: 0.0%
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
As an Amazon Associate, we earn from qualifying purchases.
How is the air in Cleveland in spring?
Moderate on a typical day: median AQI 53 across 2019–2025, with 1.6% of spring days above AQI 100. Fine particulate matter (PM2.5) is the main driver.
- ✓44.4% of spring days were Good (AQI 0–50), 54.0% Moderate (51–100).
- ✓10 days of 644 reached AQI 101+; the spring peak was 136.
- ✓Cleanest month: March; worst month: May.
Frequently asked questions
What is the air quality like in Cleveland in spring?▾
Across 2019–2025, the median daily AQI in Cleveland in spring was 53 (Moderate). 44.4% of days were Good, 54.0% Moderate, and 1.6% reached Unhealthy for Sensitive Groups or worse, based on 644 monitored days in EPA's Air Quality System.
Is spring a good time for outdoor exercise in Cleveland?▾
A typical spring day in Cleveland is Moderate (median AQI 53): outdoor exercise is acceptable for most people, but unusually sensitive individuals should watch for symptoms, and about 1 day in 63 of spring days (1.6%) 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 spring air quality problems?▾
Fine particulate matter (PM2.5) set the daily AQI on 54.0% of spring days in Cleveland. The highest spring AQI recorded in 2019–2025 was 136 (Unhealthy for Sensitive Groups), in 2021.
Cleveland spring air quality, year by year
Cleveland spring air quality by year (Cleveland-Elyria, OH, EPA AQS daily AQI)
| Year | Days monitored | Median AQI | Days above 100 | Peak AQI | Main pollutant |
|---|---|---|---|---|---|
| 2019 | 92 | 54 | 0 | 88 | PM2.5 |
| 2020 | 92 | 52 | 0 | 80 | PM2.5 |
| 2021worst | 92 | 54 | 4 | 115 | PM2.5 |
| 2022cleanest | 92 | 51 | 0 | 87 | PM2.5 |
| 2023 | 92 | 56 | 2 | 115 | O3 |
| 2024 | 92 | 53 | 3 | 136 | O3 |
| 2025 | 92 | 47 | 1 | 101 | O3 |
What spring air means in Cleveland
A typical spring day in Cleveland is Moderate (median AQI 53): outdoor exercise is acceptable for most people, but unusually sensitive individuals should watch for symptoms, and about 1 day in 63 of spring days (1.6%) reached AQI 101+ — the level at which EPA advises people with asthma, children and older adults to shorten hard outdoor exertion.
Spring's median AQI of 53 is in line with Cleveland's whole-year median of 55, so this period is neither a clean nor a dirty stretch for the area. Nationally, the median Spring AQI across every EPA metro area (307,196 metro-days, 2019–2025) is 43, so Cleveland runs above the national Spring norm; 1.6% of its Spring days topped AQI 100 versus 0.8% nationally (about the same).
Within the season, March is the cleanest month (median AQI 53, 0.0% of days above 100) and May the worst (median 54, 3.7% above 100).
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 season 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.