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)
33
Good
Peoria, Illinois
Last updated: ... (Local time)
Good
Fine
Moderate
Poor
Very poor
Hazardous
5.89 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
26.78 μg/m³
0
55
155
255
425
605+
12.00 ppb
0
55
71
86
201
201+
0.61 ppb
0
36
76
186
605
1005+
1.55 ppb
0
54
101
361
1250
2050+
0.12 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Peoria, Illinois
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AQI 33
Good
5.84μg/m³
PM2.5
24.86μg/m³
PM10
11.52ppb
O3
0.61ppb
SO2
1.56ppb
NO2
0.12ppm
CO
AQI 33
Good
5.84μg/m³
PM2.5
21.24μg/m³
PM10
14.76ppb
O3
0.63ppb
SO2
1.57ppb
NO2
0.12ppm
CO
AQI 33
Good
5.81μg/m³
PM2.5
22.23μg/m³
PM10
12.86ppb
O3
0.63ppb
SO2
1.61ppb
NO2
0.12ppm
CO
AQI 33
Good
5.80μg/m³
PM2.5
21.22μg/m³
PM10
13.55ppb
O3
0.63ppb
SO2
1.47ppb
NO2
0.12ppm
CO
AQI 33
Good
5.58μg/m³
PM2.5
27.07μg/m³
PM10
27.57ppb
O3
0.61ppb
SO2
1.87ppb
NO2
0.12ppm
CO
AQI 44
Good
7.80μg/m³
PM2.5
34.00μg/m³
PM10
21.99ppb
O3
0.57ppb
SO2
1.43ppb
NO2
0.11ppm
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 03:00:00 on 2025-07-19.
The best air quality in Peoria, Illinois was recorded at 04:00:00 on 2025-07-20.
The real-time air quality index in Peoria, Illinois is 33, currently categorized as Good.
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 5.894 μg/m3.
The current PM10 levels in Peoria, Illinois are 26.783 μg/m3.
The current carbon monoxide (CO) level in Peoria, Illinois is 0.116 ppm.
The current sulfur dioxide (SO2) levels in Peoria, Illinois are 0.609 ppb.
The current ozone (O3) levels at Peoria, Illinois is 11.999 ppm.
The current nitrogen dioxide (NO2) levels at Peoria, Illinois is 1.553 ppb.
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