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)
34
Good
Peoria, Illinois
Last updated: ... (Local time)
Good
Fine
Moderate
Poor
Very poor
Hazardous
2.41 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
10.39 μg/m³
0
55
155
255
425
605+
37.27 ppb
0
55
71
86
201
201+
0.17 ppb
0
36
76
186
605
1005+
21.00 ppb
0
54
101
361
1250
2050+
0.67 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Peoria, Illinois
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AQI 36
Good
3.40μg/m³
PM2.5
13.97μg/m³
PM10
38.79ppb
O3
0.21ppb
SO2
21.00ppb
NO2
0.67ppm
CO
AQI 31
Good
3.55μg/m³
PM2.5
31.66μg/m³
PM10
32.55ppb
O3
0.22ppb
SO2
20.96ppb
NO2
0.66ppm
CO
AQI 30
Good
3.85μg/m³
PM2.5
30.68μg/m³
PM10
32.39ppb
O3
0.42ppb
SO2
20.93ppb
NO2
0.65ppm
CO
AQI 30
Good
3.60μg/m³
PM2.5
32.50μg/m³
PM10
32.06ppb
O3
0.22ppb
SO2
21.00ppb
NO2
0.67ppm
CO
AQI 82
Moderate
26.16μg/m³
PM2.5
73.61μg/m³
PM10
36.31ppb
O3
0.42ppb
SO2
15.04ppb
NO2
0.65ppm
CO
AQI 44
Good
1.50μg/m³
PM2.5
6.01μg/m³
PM10
46.99ppb
O3
0.24ppb
SO2
20.90ppb
NO2
0.55ppm
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 01:00:00 on 2025-06-04.
The best air quality in Peoria, Illinois was recorded at 11:00:00 on 2025-06-04.
The real-time air quality index in Peoria, Illinois is 34, currently categorized as Good.
The most common pollutant in Peoria, Illinois is O3.
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 2.407 μg/m3.
The current PM10 levels in Peoria, Illinois are 10.392 μg/m3.
The current carbon monoxide (CO) level in Peoria, Illinois is 0.665 ppm.
The current sulfur dioxide (SO2) levels in Peoria, Illinois are 0.173 ppb.
The current ozone (O3) levels at Peoria, Illinois is 37.271 ppm.
The current nitrogen dioxide (NO2) levels at Peoria, Illinois is 21.001 ppb.
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