Stay updated with real-time air quality in Belleville, 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)
49
Good
Belleville, Illinois
Last updated: ... (Local time)
Good
Fine
Moderate
Poor
Very poor
Hazardous
9.38 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
42.78 μg/m³
0
55
155
255
425
605+
30.41 ppb
0
55
71
86
201
201+
0.81 ppb
0
36
76
186
605
1005+
4.09 ppb
0
54
101
361
1250
2050+
0.24 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Low
Belleville, Illinois
Belleville, Illinois
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AQI 38
Good
7.04μg/m³
PM2.5
25.92μg/m³
PM10
15.42ppb
O3
0.48ppb
SO2
10.89ppb
NO2
0.20ppm
CO
AQI 38
Good
6.98μg/m³
PM2.5
24.21μg/m³
PM10
15.59ppb
O3
0.48ppb
SO2
10.92ppb
NO2
0.20ppm
CO
AQI 38
Good
7.02μg/m³
PM2.5
30.61μg/m³
PM10
15.50ppb
O3
0.52ppb
SO2
10.87ppb
NO2
0.19ppm
CO
AQI 38
Good
7.02μg/m³
PM2.5
30.61μg/m³
PM10
15.50ppb
O3
0.52ppb
SO2
10.87ppb
NO2
0.19ppm
CO
AQI 38
Good
7.05μg/m³
PM2.5
29.41μg/m³
PM10
18.35ppb
O3
0.48ppb
SO2
11.61ppb
NO2
0.20ppm
CO
AQI 44
Good
8.17μg/m³
PM2.5
35.74μg/m³
PM10
5.17ppb
O3
0.31ppb
SO2
11.30ppb
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 Belleville, Illinois is updated every hour for accuracy.
In the past 24 hours, the air quality in Belleville, Illinois was at its worst at 03:00:00 on 2025-07-22.
In the last 24 hours, the best air quality in Belleville, Illinois was observed at 03:00:00 on 2025-07-21.
As of now, the AQI in Belleville, Illinois is 38, indicating Good conditions.
Belleville, Illinois air has the highest levels of PM2.5.
Poor air quality in Belleville, Illinois means it's advisable to stay indoors and wear a mask for your protection.
PM2.5 levels in Belleville, Illinois are currently 7.005 μg/m3.
The PM10 concentration in Belleville, Illinois is 30.637 μg/m3 at the moment.
The current carbon monoxide (CO) concentration in Belleville, Illinois is 0.194 ppm.
Currently, Belleville, Illinois has a sulfur dioxide (SO2) concentration of 0.511 ppb.
The current ozone (O3) level in Belleville, Illinois at the moment is 16.995 ppm.
Nitrogen dioxide (NO2) level in Belleville, Illinois at the moment is 10.94 ppb.
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