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
3.10 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
15.72 μg/m³
0
55
155
255
425
605+
29.02 ppb
0
55
71
86
201
201+
0.86 ppb
0
36
76
186
605
1005+
2.30 ppb
0
54
101
361
1250
2050+
0.14 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Champaign, Illinois
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AQI 28
Good
3.08μg/m³
PM2.5
15.72μg/m³
PM10
30.05ppb
O3
0.86ppb
SO2
2.29ppb
NO2
0.14ppm
CO
AQI 27
Good
3.17μg/m³
PM2.5
12.99μg/m³
PM10
29.34ppb
O3
0.65ppb
SO2
2.61ppb
NO2
0.14ppm
CO
AQI 26
Good
3.02μg/m³
PM2.5
15.61μg/m³
PM10
28.21ppb
O3
0.84ppb
SO2
2.35ppb
NO2
0.14ppm
CO
AQI 24
Good
3.48μg/m³
PM2.5
15.00μg/m³
PM10
26.42ppb
O3
0.04ppb
SO2
1.08ppb
NO2
0.19ppm
CO
AQI 28
Good
3.10μg/m³
PM2.5
13.99μg/m³
PM10
30.00ppb
O3
0.85ppb
SO2
3.16ppb
NO2
0.14ppm
CO
AQI 28
Good
3.07μg/m³
PM2.5
14.06μg/m³
PM10
30.40ppb
O3
0.87ppb
SO2
2.89ppb
NO2
0.12ppm
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 12:00:00 on 2026-03-16.
In the last 24 hours, the best air quality in Champaign, Illinois was observed at 03:00:00 on 2026-03-17.
As of now, the AQI in Champaign, Illinois is 27, indicating Good 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 3.102 μg/m3.
The PM10 concentration in Champaign, Illinois is 15.721 μg/m3 at the moment.
The current carbon monoxide (CO) concentration in Champaign, Illinois is 0.139 ppm.
Currently, Champaign, Illinois has a sulfur dioxide (SO2) concentration of 0.859 ppb.
The current ozone (O3) level in Champaign, Illinois at the moment is 29.018 ppm.
Nitrogen dioxide (NO2) level in Champaign, Illinois at the moment is 2.3 ppb.
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