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)
51
Moderate
Champaign, Illinois
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
6.89 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
30.97 μg/m³
0
55
155
255
425
605+
55.20 ppb
0
55
71
86
201
201+
0.82 ppb
0
36
76
186
605
1005+
3.69 ppb
0
54
101
361
1250
2050+
0.12 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Moderate
Champaign, Illinois
Champaign, Illinois
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AQI 54
Moderate
6.87μg/m³
PM2.5
30.77μg/m³
PM10
55.60ppb
O3
0.81ppb
SO2
3.69ppb
NO2
0.12ppm
CO
AQI 50
Good
7.19μg/m³
PM2.5
30.00μg/m³
PM10
54.25ppb
O3
0.84ppb
SO2
3.71ppb
NO2
0.12ppm
CO
AQI 50
Good
6.89μg/m³
PM2.5
30.05μg/m³
PM10
54.08ppb
O3
0.96ppb
SO2
3.66ppb
NO2
0.13ppm
CO
AQI 58
Moderate
8.43μg/m³
PM2.5
37.02μg/m³
PM10
56.90ppb
O3
1.34ppb
SO2
1.00ppb
NO2
0.17ppm
CO
AQI 54
Moderate
7.49μg/m³
PM2.5
32.97μg/m³
PM10
56.03ppb
O3
0.89ppb
SO2
3.25ppb
NO2
0.15ppm
CO
AQI 51
Moderate
7.75μg/m³
PM2.5
33.96μg/m³
PM10
54.98ppb
O3
1.16ppb
SO2
3.95ppb
NO2
0.15ppm
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 03:00:00 on 2026-10-22.
In the last 24 hours, the best air quality in Champaign, Illinois was observed at 04:00:00 on 2026-10-22.
As of now, the AQI in Champaign, Illinois is 51, indicating Moderate conditions.
Champaign, Illinois air has the highest levels of O3.
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 6.895 μg/m3.
The PM10 concentration in Champaign, Illinois is 30.966 μg/m3 at the moment.
The current carbon monoxide (CO) concentration in Champaign, Illinois is 0.119 ppm.
Currently, Champaign, Illinois has a sulfur dioxide (SO2) concentration of 0.818 ppb.
The current ozone (O3) level in Champaign, Illinois at the moment is 55.198 ppm.
Nitrogen dioxide (NO2) level in Champaign, Illinois at the moment is 3.694 ppb.
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