Peoria Air Quality in 2022
In 2022, Peoria's air quality (Peoria, IL area) had a median daily AQI of 48 (Good) across 319 monitored days. 0 days (0.0%) reached Unhealthy for Sensitive Groups or worse, 181 were Good, and the year's peak AQI was 100 (Moderate). Fine particulate matter (PM2.5) set the daily AQI on 217 of those days. The cleanest month of 2022 was April (median AQI 41, 0 days above 100) and the worst was June (median 58, 0 days above 100, peak 100).
- Good: 56.7%
- Moderate: 43.3%
- Unhealthy for Sensitive Groups: 0.0%
- Unhealthy or worse: 0.0%
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How was Peoria's air quality in 2022?
Good on a typical day: median AQI 48, with 0 days above AQI 100 out of 319 monitored — the 2nd cleanest of 7 years on record for the area.
- ✓Peak AQI in 2022: 100 (Moderate).
- ✓Fine particulate matter (PM2.5) was the main pollutant on 217 days.
- ✓Cleanest month: April; worst: June.
Frequently asked questions
What was the average AQI in Peoria in 2022?▾
EPA's Air Quality System puts Peoria's (Peoria, IL) median daily AQI for 2022 at 48, which is Good. 0 days were Unhealthy for Sensitive Groups or worse and the year's highest AQI was 100.
Which month had the worst air quality in Peoria in 2022?▾
The cleanest month of 2022 was April (median AQI 41, 0 days above 100) and the worst was June (median 58, 0 days above 100, peak 100).
Was 2022 a good or bad year for Peoria's air?▾
Among the 7 years EPA has published for the area (2019–2025), 2022 ranks 2nd cleanest by days above AQI 100. 2022's median of 48 is above the area's typical annual median of 45.
Peoria month by month in 2022
Peoria air quality month by month, 2022 (Peoria, IL, EPA AQS daily AQI)
| Month | Days monitored | Median AQI | Days above 100 | Peak AQI | Main pollutant |
|---|---|---|---|---|---|
| January | 31 | 52 | 0 | 85 | PM2.5 |
| February | 28 | 51 | 0 | 70 | PM2.5 |
| March | 31 | 45 | 0 | 82 | PM2.5 |
| Aprilcleanest | 30 | 41 | 0 | 58 | PM2.5 |
| May | 31 | 47 | 0 | 80 | O3 |
| Juneworst | 30 | 58 | 0 | 100 | O3 |
| July | 31 | 48 | 0 | 86 | PM2.5 |
| August | 31 | 46 | 0 | 58 | PM2.5 |
| September | 30 | 42 | 0 | 63 | PM2.5 |
| October | 31 | 48 | 0 | 75 | PM2.5 |
| November | 15 | 54 | 0 | 81 | PM2.5 |
How 2022 compares
Among the 7 years EPA has published for the area (2019–2025), 2022 ranks 2nd cleanest by days above AQI 100.
2022's median of 48 is above the area's typical annual median of 45.
Activity-specific thresholds: running, cycling, kids' sports.
Right now in Peoria
The latest EPA AirNow observation puts Peoria's AQI at 40 (PM2.5). The figures above are multi-year annual 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.