Peoria Air Quality in February
Across 2019–2025, Peoria's February air quality had a median AQI of 47 (Good) over 179 monitored days in the Peoria, IL area. 0.0% of February days (0 of 179) reached Unhealthy for Sensitive Groups or worse, and fine particulate matter (PM2.5) set the daily AQI on 100.0% of days. The cleanest February on record here was 2024 (median AQI 41, 0 days above 100) and the worst was 2022 (median 51, 0 days above 100, peak AQI 70).
- Good: 57.5%
- Moderate: 42.5%
- Unhealthy for Sensitive Groups: 0.0%
- Unhealthy or worse: 0.0%
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How is the air in Peoria in February?
Good on a typical day: median AQI 47 across 2019–2025, with 0.0% of February days above AQI 100. Fine particulate matter (PM2.5) is the main driver.
- ✓57.5% of February days were Good (AQI 0–50), 42.5% Moderate (51–100).
- ✓0 days of 179 reached AQI 101+; the February peak was 89.
- ✓Best February: 2024; worst February: 2022.
Frequently asked questions
What is the air quality like in Peoria in February?▾
Across 2019–2025, the median daily AQI in Peoria in February was 47 (Good). 57.5% of days were Good, 42.5% Moderate, and 0.0% reached Unhealthy for Sensitive Groups or worse, based on 179 monitored days in EPA's Air Quality System.
Is February a good time for outdoor exercise in Peoria?▾
A typical February day in Peoria sits in the Good range (median AQI 47), so running, cycling and children's outdoor play are fine for everyone on most days; fewer than 1% of February days reached AQI 101+ in 2019–2025.
Which pollutant causes Peoria's February air quality problems?▾
Fine particulate matter (PM2.5) set the daily AQI on 100.0% of February days in Peoria. The highest February AQI recorded in 2019–2025 was 89 (Moderate), in 2022.
Peoria February air quality, year by year
Peoria February air quality by year (Peoria, IL, EPA AQS daily AQI)
| Year | Days monitored | Median AQI | Days above 100 | Peak AQI | Main pollutant |
|---|---|---|---|---|---|
| 2019 | 28 | 51 | 0 | 75 | PM2.5 |
| 2020 | 29 | 44 | 0 | 64 | PM2.5 |
| 2021 | 28 | 51 | 0 | 75 | PM2.5 |
| 2022worst | 28 | 51 | 0 | 70 | PM2.5 |
| 2023 | 12 | 47 | 0 | 57 | PM2.5 |
| 2024cleanest | 29 | 41 | 0 | 89 | PM2.5 |
| 2025 | 25 | 41 | 0 | 63 | PM2.5 |
What February air means in Peoria
A typical February day in Peoria sits in the Good range (median AQI 47), so running, cycling and children's outdoor play are fine for everyone on most days; fewer than 1% of February days reached AQI 101+ in 2019–2025.
February's median AQI of 47 is in line with Peoria's whole-year median of 45, so this period is neither a clean nor a dirty stretch for the area. Nationally, the median February AQI across every EPA metro area (87,428 metro-days, 2019–2025) is 41, so Peoria runs above the national February norm; 0.0% of its February days topped AQI 100 versus 0.4% nationally (about the same).
February is part of Peoria's winter season (December, January, February); the winter page pools all three months.
Activity-specific thresholds: running, cycling, kids' sports.
Right now in Peoria
The latest EPA AirNow observation puts Peoria's AQI at 42 (PM2.5). The figures above are multi-year month statistics, not today's reading.
View current Peoria air quality →Source: EPA Air Quality System (AQS) pre-generated Daily AQI by CBSA files — daily AQI by CBSA (Peoria, IL), 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.