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)
33
Good
Belleville, Illinois
Last updated: ... (Local time)
Good
Fine
Moderate
Poor
Very poor
Hazardous
5.94 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
27.53 μg/m³
0
55
155
255
425
605+
24.37 ppb
0
55
71
86
201
201+
0.61 ppb
0
36
76
186
605
1005+
3.71 ppb
0
54
101
361
1250
2050+
0.32 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Moderate
Belleville, Illinois
Belleville, Illinois
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AQI 44
Good
7.30μg/m³
PM2.5
24.36μg/m³
PM10
47.50ppb
O3
2.51ppb
SO2
7.64ppb
NO2
0.23ppm
CO
AQI 44
Good
7.90μg/m³
PM2.5
34.57μg/m³
PM10
47.48ppb
O3
2.71ppb
SO2
7.77ppb
NO2
0.23ppm
CO
AQI 44
Good
7.63μg/m³
PM2.5
31.98μg/m³
PM10
47.10ppb
O3
2.48ppb
SO2
7.17ppb
NO2
0.23ppm
CO
AQI 44
Good
7.63μg/m³
PM2.5
31.98μg/m³
PM10
47.10ppb
O3
2.48ppb
SO2
7.17ppb
NO2
0.23ppm
CO
AQI 44
Good
7.80μg/m³
PM2.5
33.86μg/m³
PM10
45.28ppb
O3
2.98ppb
SO2
7.89ppb
NO2
0.23ppm
CO
AQI 38
Good
7.10μg/m³
PM2.5
31.89μg/m³
PM10
35.26ppb
O3
3.75ppb
SO2
10.18ppb
NO2
0.23ppm
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 04:00:00 on 2025-09-05.
In the last 24 hours, the best air quality in Belleville, Illinois was observed at 01:00:00 on 2025-09-06.
As of now, the AQI in Belleville, Illinois is 33, 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 5.941 μg/m3.
The PM10 concentration in Belleville, Illinois is 27.528 μg/m3 at the moment.
The current carbon monoxide (CO) concentration in Belleville, Illinois is 0.317 ppm.
Currently, Belleville, Illinois has a sulfur dioxide (SO2) concentration of 0.61 ppb.
The current ozone (O3) level in Belleville, Illinois at the moment is 24.374 ppm.
Nitrogen dioxide (NO2) level in Belleville, Illinois at the moment is 3.712 ppb.
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