Toledo Air Quality in March
Across 2019–2025, Toledo's March air quality had a median AQI of 41 (Good) over 217 monitored days in the Toledo, OH area. 0.0% of March days (0 of 217) reached Unhealthy for Sensitive Groups or worse, and ground-level ozone set the daily AQI on 53.9% of days. The cleanest March on record here was 2020 (median AQI 37, 0 days above 100) and the worst was 2025 (median 48, 0 days above 100, peak AQI 64).
- Good: 70.5%
- Moderate: 29.5%
- Unhealthy for Sensitive Groups: 0.0%
- Unhealthy or worse: 0.0%
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How is the air in Toledo in March?
Good on a typical day: median AQI 41 across 2019–2025, with 0.0% of March days above AQI 100. Ground-level ozone is the main driver.
- ✓70.5% of March days were Good (AQI 0–50), 29.5% Moderate (51–100).
- ✓0 days of 217 reached AQI 101+; the March peak was 85.
- ✓Best March: 2020; worst March: 2025.
Frequently asked questions
What is the air quality like in Toledo in March?▾
Across 2019–2025, the median daily AQI in Toledo in March was 41 (Good). 70.5% of days were Good, 29.5% Moderate, and 0.0% reached Unhealthy for Sensitive Groups or worse, based on 217 monitored days in EPA's Air Quality System.
Is March a good time for outdoor exercise in Toledo?▾
A typical March day in Toledo sits in the Good range (median AQI 41), so running, cycling and children's outdoor play are fine for everyone on most days; fewer than 1% of March days reached AQI 101+ in 2019–2025.
Which pollutant causes Toledo's March air quality problems?▾
Ground-level ozone set the daily AQI on 53.9% of March days in Toledo. The highest March AQI recorded in 2019–2025 was 85 (Moderate), in 2025.
Toledo March air quality, year by year
Toledo March air quality by year (Toledo, OH, EPA AQS daily AQI)
| Year | Days monitored | Median AQI | Days above 100 | Peak AQI | Main pollutant |
|---|---|---|---|---|---|
| 2019 | 31 | 43 | 0 | 84 | O3 |
| 2020cleanest | 31 | 37 | 0 | 52 | O3 |
| 2021 | 31 | 41 | 0 | 69 | PM2.5 |
| 2022 | 31 | 38 | 0 | 85 | O3 |
| 2023 | 31 | 43 | 0 | 64 | O3 |
| 2024 | 31 | 46 | 0 | 77 | PM2.5 |
| 2025worst | 31 | 48 | 0 | 64 | PM2.5 |
What March air means in Toledo
A typical March day in Toledo sits in the Good range (median AQI 41), so running, cycling and children's outdoor play are fine for everyone on most days; fewer than 1% of March days reached AQI 101+ in 2019–2025.
March's median AQI of 41 is below Toledo's whole-year median of 45, making it one of the area's cleaner periods. Nationally, the median March AQI across every EPA metro area (102,455 metro-days, 2019–2025) is 42, so Toledo runs in line with the national March norm; 0.0% of its March days topped AQI 100 versus 0.4% nationally (about the same).
March is part of Toledo's spring season (March, April, May); the spring page pools all three months.
Activity-specific thresholds: running, cycling, kids' sports.
Right now in Toledo
The latest EPA AirNow observation puts Toledo's AQI at 33 (PM2.5). The figures above are multi-year month statistics, not today's reading.
View current Toledo air quality →Source: EPA Air Quality System (AQS) pre-generated Daily AQI by CBSA files — daily AQI by CBSA (Toledo, 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.