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)
54
Moderate
Champaign, Illinois
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
10.60 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
47.03 μg/m³
0
55
155
255
425
605+
50.01 ppb
0
55
71
86
201
201+
0.62 ppb
0
36
76
186
605
1005+
6.16 ppb
0
54
101
361
1250
2050+
0.14 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
High
Champaign, Illinois
Champaign, Illinois
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AQI 54
Moderate
10.61μg/m³
PM2.5
47.21μg/m³
PM10
49.86ppb
O3
0.62ppb
SO2
6.16ppb
NO2
0.14ppm
CO
AQI 54
Moderate
10.57μg/m³
PM2.5
47.25μg/m³
PM10
48.65ppb
O3
0.61ppb
SO2
6.16ppb
NO2
0.14ppm
CO
AQI 54
Moderate
10.63μg/m³
PM2.5
48.54μg/m³
PM10
50.58ppb
O3
0.66ppb
SO2
6.08ppb
NO2
0.16ppm
CO
AQI 36
Good
5.86μg/m³
PM2.5
25.07μg/m³
PM10
39.45ppb
O3
1.29ppb
SO2
2.01ppb
NO2
0.16ppm
CO
AQI 52
Moderate
10.40μg/m³
PM2.5
46.00μg/m³
PM10
47.05ppb
O3
0.64ppb
SO2
6.30ppb
NO2
0.17ppm
CO
AQI 52
Moderate
10.27μg/m³
PM2.5
40.12μg/m³
PM10
49.98ppb
O3
1.69ppb
SO2
15.39ppb
NO2
0.20ppm
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 10:00:00 on 2026-04-23.
In the last 24 hours, the best air quality in Champaign, Illinois was observed at 01:00:00 on 2026-04-23.
As of now, the AQI in Champaign, Illinois is 54, indicating Moderate 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 10.602 μg/m3.
The PM10 concentration in Champaign, Illinois is 47.026 μg/m3 at the moment.
The current carbon monoxide (CO) concentration in Champaign, Illinois is 0.14 ppm.
Currently, Champaign, Illinois has a sulfur dioxide (SO2) concentration of 0.621 ppb.
The current ozone (O3) level in Champaign, Illinois at the moment is 50.013 ppm.
Nitrogen dioxide (NO2) level in Champaign, Illinois at the moment is 6.159 ppb.
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