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)
33
Good
Champaign, 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+
26.92 μg/m³
0
55
155
255
425
605+
11.70 ppb
0
55
71
86
201
201+
0.22 ppb
0
36
76
186
605
1005+
9.43 ppb
0
54
101
361
1250
2050+
0.13 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Low
Champaign, Illinois
Champaign, Illinois
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AQI 33
Good
5.83μg/m³
PM2.5
26.52μg/m³
PM10
11.82ppb
O3
0.21ppb
SO2
9.52ppb
NO2
0.13ppm
CO
AQI 33
Good
6.04μg/m³
PM2.5
25.18μg/m³
PM10
12.76ppb
O3
0.23ppb
SO2
9.28ppb
NO2
0.14ppm
CO
AQI 33
Good
5.86μg/m³
PM2.5
25.50μg/m³
PM10
11.32ppb
O3
0.25ppb
SO2
10.72ppb
NO2
0.15ppm
CO
AQI 27
Good
4.68μg/m³
PM2.5
20.02μg/m³
PM10
17.41ppb
O3
0.41ppb
SO2
7.39ppb
NO2
0.20ppm
CO
AQI 38
Good
7.17μg/m³
PM2.5
31.88μg/m³
PM10
13.00ppb
O3
0.36ppb
SO2
10.33ppb
NO2
0.19ppm
CO
AQI 33
Good
6.14μg/m³
PM2.5
27.27μg/m³
PM10
9.96ppb
O3
0.43ppb
SO2
11.38ppb
NO2
0.22ppm
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 04:00:00 on 2026-08-12.
In the last 24 hours, the best air quality in Champaign, Illinois was observed at 04:00:00 on 2026-08-13.
As of now, the AQI in Champaign, Illinois is 33, 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 5.888 μg/m3.
The PM10 concentration in Champaign, Illinois is 26.924 μg/m3 at the moment.
The current carbon monoxide (CO) concentration in Champaign, Illinois is 0.134 ppm.
Currently, Champaign, Illinois has a sulfur dioxide (SO2) concentration of 0.217 ppb.
The current ozone (O3) level in Champaign, Illinois at the moment is 11.704 ppm.
Nitrogen dioxide (NO2) level in Champaign, Illinois at the moment is 9.427 ppb.
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