Peoria Air Quality in June
Across 2019–2025, Peoria's June air quality had a median AQI of 55 (Moderate) over 210 monitored days in the Peoria, IL area. 8.6% of June days (18 of 210) reached Unhealthy for Sensitive Groups or worse, and ground-level ozone set the daily AQI on 70.0% of days. The cleanest June on record here was 2024 (median AQI 47, 0 days above 100) and the worst was 2023 (median 101, 15 days above 100, peak AQI 143).
- Good: 39.0%
- Moderate: 52.4%
- Unhealthy for Sensitive Groups: 8.6%
- Unhealthy or worse: 0.0%
Improve Indoor Air Quality
Even with good outdoor air in Peoria, indoor PM2.5, dust and allergens build up. A True-HEPA purifier keeps a bedroom or office consistently clean.
Recommended: Levoit Core 400S — True HEPA · CADR ~141 CFM · rooms up to 219 sq ft
As an Amazon Associate, we earn from qualifying purchases.
How is the air in Peoria in June?
Moderate on a typical day: median AQI 55 across 2019–2025, with 8.6% of June days above AQI 100. Ground-level ozone is the main driver.
- ✓39.0% of June days were Good (AQI 0–50), 52.4% Moderate (51–100).
- ✓18 days of 210 reached AQI 101+; the June peak was 143.
- ✓Best June: 2024; worst June: 2023.
Frequently asked questions
What is the air quality like in Peoria in June?▾
Across 2019–2025, the median daily AQI in Peoria in June was 55 (Moderate). 39.0% of days were Good, 52.4% Moderate, and 8.6% reached Unhealthy for Sensitive Groups or worse, based on 210 monitored days in EPA's Air Quality System.
Is June a good time for outdoor exercise in Peoria?▾
A typical June day in Peoria is Moderate (median AQI 55): outdoor exercise is acceptable for most people, but unusually sensitive individuals should watch for symptoms, and about 1 day in 12 of June days (8.6%) reached AQI 101+ — the level at which EPA advises people with asthma, children and older adults to shorten hard outdoor exertion.
Which pollutant causes Peoria's June air quality problems?▾
Ground-level ozone set the daily AQI on 70.0% of June days in Peoria. The highest June AQI recorded in 2019–2025 was 143 (Unhealthy for Sensitive Groups), in 2023.
Peoria June air quality, year by year
Peoria June air quality by year (Peoria, IL, EPA AQS daily AQI)
| Year | Days monitored | Median AQI | Days above 100 | Peak AQI | Main pollutant |
|---|---|---|---|---|---|
| 2019 | 30 | 49 | 0 | 87 | O3 |
| 2020 | 30 | 51 | 0 | 100 | O3 |
| 2021 | 30 | 54 | 1 | 101 | O3 |
| 2022 | 30 | 58 | 0 | 100 | O3 |
| 2023worst | 30 | 101 | 15 | 143 | O3 |
| 2024cleanest | 30 | 47 | 0 | 100 | O3 |
| 2025 | 30 | 58 | 2 | 122 | PM2.5 |
What June air means in Peoria
A typical June day in Peoria is Moderate (median AQI 55): outdoor exercise is acceptable for most people, but unusually sensitive individuals should watch for symptoms, and about 1 day in 12 of June days (8.6%) reached AQI 101+ — the level at which EPA advises people with asthma, children and older adults to shorten hard outdoor exertion.
June's median AQI of 55 is above Peoria's whole-year median of 45, making it one of the area's dirtier periods. Nationally, the median June AQI across every EPA metro area (100,635 metro-days, 2019–2025) is 46, so Peoria runs above the national June norm; 8.6% of its June days topped AQI 100 versus 3.7% nationally (above average).
June is part of Peoria's summer season (June, July, August); the summer 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.