Stay updated with real-time air quality in Champaign, 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)
27
Good
Champaign, Illinois
Last updated: ... (Local time)
Good
Fine
Moderate
Poor
Very poor
Hazardous
5.50 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
23.98 μg/m³
0
55
155
255
425
605+
21.63 ppb
0
55
71
86
201
201+
1.00 ppb
0
36
76
186
605
1005+
5.28 ppb
0
54
101
361
1250
2050+
0.15 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Moderate
Champaign, Illinois
Champaign, Illinois
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AQI 66
Moderate
16.83μg/m³
PM2.5
75.02μg/m³
PM10
38.43ppb
O3
1.26ppb
SO2
3.89ppb
NO2
0.23ppm
CO
AQI 66
Moderate
17.03μg/m³
PM2.5
69.10μg/m³
PM10
37.24ppb
O3
1.24ppb
SO2
5.34ppb
NO2
0.23ppm
CO
AQI 66
Moderate
16.88μg/m³
PM2.5
69.83μg/m³
PM10
35.73ppb
O3
1.19ppb
SO2
4.99ppb
NO2
0.24ppm
CO
AQI 44
Good
1.84μg/m³
PM2.5
7.98μg/m³
PM10
47.05ppb
O3
0.18ppb
SO2
1.62ppb
NO2
0.18ppm
CO
AQI 69
Moderate
18.77μg/m³
PM2.5
82.87μg/m³
PM10
39.98ppb
O3
2.86ppb
SO2
4.11ppb
NO2
0.23ppm
CO
AQI 66
Moderate
16.83μg/m³
PM2.5
50.01μg/m³
PM10
38.00ppb
O3
1.31ppb
SO2
4.46ppb
NO2
0.27ppm
CO
Air quality and pollutant data for Illinois, USA are sourced from ground-based monitors and satellites, adhering to US EPA standards. Machine learning and advanced algorithms enhance the data by incorporating local variables like traffic and population density, ensuring high accuracy and dependability.
Source: Ambee Data Sources
The air quality information for Champaign, Illinois is updated every hour for accuracy.
In the past 24 hours, the air quality in Champaign, Illinois was at its worst at 02:00:00 on 2025-09-05.
In the last 24 hours, the best air quality in Champaign, Illinois was observed at 11:00:00 on 2025-09-05.
As of now, the AQI in Champaign, Illinois is 27, indicating Good conditions.
Champaign, Illinois air has the highest levels of PM2.5.
Poor air quality in Champaign, Illinois means it's advisable to stay indoors and wear a mask for your protection.
PM2.5 levels in Champaign, Illinois are currently 5.498 μg/m3.
The PM10 concentration in Champaign, Illinois is 23.975 μg/m3 at the moment.
The current carbon monoxide (CO) concentration in Champaign, Illinois is 0.155 ppm.
Currently, Champaign, Illinois has a sulfur dioxide (SO2) concentration of 1.002 ppb.
The current ozone (O3) level in Champaign, Illinois at the moment is 21.63 ppm.
Nitrogen dioxide (NO2) level in Champaign, Illinois at the moment is 5.277 ppb.
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