Toledo Air Quality in January
Across 2019–2025, Toledo's January air quality had a median AQI of 41 (Good) over 211 monitored days in the Toledo, OH area. 0.0% of January days (0 of 211) reached Unhealthy for Sensitive Groups or worse, and fine particulate matter (PM2.5) set the daily AQI on 100.0% of days. The cleanest January on record here was 2019 (median AQI 34, 0 days above 100) and the worst was 2024 (median 53, 0 days above 100, peak AQI 75).
- Good: 66.8%
- Moderate: 33.2%
- Unhealthy for Sensitive Groups: 0.0%
- Unhealthy or worse: 0.0%
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How is the air in Toledo in January?
Good on a typical day: median AQI 41 across 2019–2025, with 0.0% of January days above AQI 100. Fine particulate matter (PM2.5) is the main driver.
- ✓66.8% of January days were Good (AQI 0–50), 33.2% Moderate (51–100).
- ✓0 days of 211 reached AQI 101+; the January peak was 86.
- ✓Best January: 2019; worst January: 2024.
Frequently asked questions
What is the air quality like in Toledo in January?▾
Across 2019–2025, the median daily AQI in Toledo in January was 41 (Good). 66.8% of days were Good, 33.2% Moderate, and 0.0% reached Unhealthy for Sensitive Groups or worse, based on 211 monitored days in EPA's Air Quality System.
Is January a good time for outdoor exercise in Toledo?▾
A typical January 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 January days reached AQI 101+ in 2019–2025.
Which pollutant causes Toledo's January air quality problems?▾
Fine particulate matter (PM2.5) set the daily AQI on 100.0% of January days in Toledo. The highest January AQI recorded in 2019–2025 was 86 (Moderate), in 2024.
Toledo January air quality, year by year
Toledo January air quality by year (Toledo, OH, EPA AQS daily AQI)
| Year | Days monitored | Median AQI | Days above 100 | Peak AQI | Main pollutant |
|---|---|---|---|---|---|
| 2019cleanest | 31 | 34 | 0 | 81 | PM2.5 |
| 2020 | 28 | 39 | 0 | 64 | PM2.5 |
| 2021 | 31 | 37 | 0 | 74 | PM2.5 |
| 2022 | 28 | 42 | 0 | 61 | PM2.5 |
| 2023 | 31 | 38 | 0 | 72 | PM2.5 |
| 2024worst | 31 | 53 | 0 | 75 | PM2.5 |
| 2025 | 31 | 49 | 0 | 86 | PM2.5 |
What January air means in Toledo
A typical January 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 January days reached AQI 101+ in 2019–2025.
January'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 January AQI across every EPA metro area (95,602 metro-days, 2019–2025) is 39, so Toledo runs in line with the national January norm; 0.0% of its January days topped AQI 100 versus 0.7% nationally (about the same).
January is part of Toledo's winter season (December, January, February); the winter 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.