Erie Air Quality in January
Across 2019–2025, Erie's January air quality had a median AQI of 35 (Good) over 186 monitored days in the Erie, PA area. 0.0% of January days (0 of 186) reached Unhealthy for Sensitive Groups or worse, and fine particulate matter (PM2.5) set the daily AQI on 71.0% of days. The cleanest January on record here was 2020 (median AQI 33, 0 days above 100) and the worst was 2023 (median 45, 0 days above 100, peak AQI 75).
- Good: 74.7%
- Moderate: 25.3%
- Unhealthy for Sensitive Groups: 0.0%
- Unhealthy or worse: 0.0%
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How is the air in Erie in January?
Good on a typical day: median AQI 35 across 2019–2025, with 0.0% of January days above AQI 100. Fine particulate matter (PM2.5) is the main driver.
- ✓74.7% of January days were Good (AQI 0–50), 25.3% Moderate (51–100).
- ✓0 days of 186 reached AQI 101+; the January peak was 75.
- ✓Best January: 2020; worst January: 2023.
Frequently asked questions
What is the air quality like in Erie in January?▾
Across 2019–2025, the median daily AQI in Erie in January was 35 (Good). 74.7% of days were Good, 25.3% Moderate, and 0.0% reached Unhealthy for Sensitive Groups or worse, based on 186 monitored days in EPA's Air Quality System.
Is January a good time for outdoor exercise in Erie?▾
A typical January day in Erie sits in the Good range (median AQI 35), 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 Erie's January air quality problems?▾
Fine particulate matter (PM2.5) set the daily AQI on 71.0% of January days in Erie. The highest January AQI recorded in 2019–2025 was 75 (Moderate), in 2023.
Erie January air quality, year by year
Erie January air quality by year (Erie, PA, EPA AQS daily AQI)
| Year | Days monitored | Median AQI | Days above 100 | Peak AQI | Main pollutant |
|---|---|---|---|---|---|
| 2019 | 31 | 35 | 0 | 67 | PM2.5 |
| 2020cleanest | 31 | 33 | 0 | 64 | O3 |
| 2022 | 31 | 40 | 0 | 68 | PM2.5 |
| 2023worst | 31 | 45 | 0 | 75 | PM2.5 |
| 2024 | 31 | 34 | 0 | 59 | PM2.5 |
| 2025 | 31 | 35 | 0 | 63 | PM2.5 |
What January air means in Erie
A typical January day in Erie sits in the Good range (median AQI 35), 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 35 is in line with Erie's whole-year median of 38, so this period is neither a clean nor a dirty stretch for the area. Nationally, the median January AQI across every EPA metro area (95,602 metro-days, 2019–2025) is 39, so Erie runs below the national January norm; 0.0% of its January days topped AQI 100 versus 0.7% nationally (about the same).
January is part of Erie's winter season (December, January, February); the winter page pools all three months.
Activity-specific thresholds: running, cycling, kids' sports.
Right now in Erie
The latest EPA AirNow observation puts Erie's AQI at 40 (PM2.5). The figures above are multi-year month statistics, not today's reading.
View current Erie air quality →Source: EPA Air Quality System (AQS) pre-generated Daily AQI by CBSA files — daily AQI by CBSA (Erie, PA), 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.