Stay updated with real-time air quality in Peoria, Illinois featuring accurate data on AQI, PM2.5, PM10, O3, NO2, SO2, and CO levels. Use our interactive map and detailed forecasts to monitor pollution trends, manage health risks, and plan your daily activities with confidence.
Live AQI (Air Quality Index)
52
Moderate
Peoria, Illinois
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
9.96 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
44.92 μg/m³
0
55
155
255
425
605+
37.20 ppb
0
55
71
86
201
201+
0.36 ppb
0
36
76
186
605
1005+
3.63 ppb
0
54
101
361
1250
2050+
0.20 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Peoria, Illinois
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AQI 56
Moderate
12.41μg/m³
PM2.5
49.87μg/m³
PM10
23.52ppb
O3
0.42ppb
SO2
4.84ppb
NO2
0.22ppm
CO
AQI 52
Moderate
10.24μg/m³
PM2.5
34.51μg/m³
PM10
22.81ppb
O3
0.42ppb
SO2
5.13ppb
NO2
0.21ppm
CO
AQI 52
Moderate
9.64μg/m³
PM2.5
34.59μg/m³
PM10
22.55ppb
O3
0.44ppb
SO2
5.13ppb
NO2
0.21ppm
CO
AQI 52
Moderate
10.48μg/m³
PM2.5
38.76μg/m³
PM10
21.18ppb
O3
0.48ppb
SO2
5.11ppb
NO2
0.21ppm
CO
AQI 52
Moderate
9.80μg/m³
PM2.5
34.57μg/m³
PM10
22.99ppb
O3
0.44ppb
SO2
3.91ppb
NO2
0.22ppm
CO
AQI 52
Moderate
10.10μg/m³
PM2.5
45.00μg/m³
PM10
27.00ppb
O3
0.45ppb
SO2
7.04ppb
NO2
0.20ppm
CO
Air quality measurements for Illinois, USA meet strict US EPA standards. These measurements are collected from reliable sources, including satellites and ground-based monitoring systems. Advanced algorithms and machine learning techniques are applied to the data, factoring in variables such as traffic and population density, to ensure precision and reliability.
Source: Ambee Data Sources
Air quality data for Peoria, Illinois is updated on an hourly basis.
The worst air quality in Peoria, Illinois was recorded at 10:00:00 on 2026-08-08.
The best air quality in Peoria, Illinois was recorded at 03:00:00 on 2026-08-07.
The real-time air quality index in Peoria, Illinois is 58, currently categorized as Moderate.
The most common pollutant in Peoria, Illinois is PM2.5.
If the air quality in Peoria, Illinois is poor, limit outdoor activities and use a mask to safeguard your health.
The measured PM2.5 levels in Peoria, Illinois at present are 13.122 μg/m3.
The current PM10 levels in Peoria, Illinois are 58.127 μg/m3.
The current carbon monoxide (CO) level in Peoria, Illinois is 0.216 ppm.
The current sulfur dioxide (SO2) levels in Peoria, Illinois are 0.423 ppb.
The current ozone (O3) levels at Peoria, Illinois is 23.39 ppm.
The current nitrogen dioxide (NO2) levels at Peoria, Illinois is 4.85 ppb.
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