Stay updated with real-time air quality in Cahokia Heights, 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)
22
Good
Cahokia Heights, Illinois
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
3.98 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
19.77 μg/m³
0
55
155
255
425
605+
19.80 ppb
0
55
71
86
201
201+
0.26 ppb
0
36
76
186
605
1005+
6.36 ppb
0
54
101
361
1250
2050+
0.24 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Low
Cahokia Heights, Illinois
Cahokia Heights, Illinois
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AQI 22
Good
3.50μg/m³
PM2.5
21.51μg/m³
PM10
20.43ppb
O3
0.15ppb
SO2
5.59ppb
NO2
0.21ppm
CO
AQI 27
Good
5.47μg/m³
PM2.5
23.99μg/m³
PM10
15.14ppb
O3
0.24ppb
SO2
6.79ppb
NO2
0.23ppm
CO
AQI 22
Good
3.83μg/m³
PM2.5
16.83μg/m³
PM10
18.47ppb
O3
0.36ppb
SO2
6.95ppb
NO2
0.26ppm
CO
AQI 22
Good
3.91μg/m³
PM2.5
17.09μg/m³
PM10
18.81ppb
O3
0.36ppb
SO2
7.03ppb
NO2
0.26ppm
CO
AQI 22
Good
3.83μg/m³
PM2.5
16.70μg/m³
PM10
18.38ppb
O3
0.38ppb
SO2
6.87ppb
NO2
0.26ppm
CO
AQI 22
Good
4.44μg/m³
PM2.5
20.06μg/m³
PM10
18.81ppb
O3
0.36ppb
SO2
7.65ppb
NO2
0.28ppm
CO
Air quality measurements for Illinois, USA meet strict US EPA standards. These measurements are collected from reliable sources, including satellites and ground-based monitoring systems. Advanced algorithms and machine learning techniques are applied to the data, factoring in variables such as traffic and population density, to ensure precision and reliability.
Source: Ambee Data Sources
Air quality data for Cahokia Heights, Illinois is updated on an hourly basis.
The worst air quality in Cahokia Heights, Illinois was recorded at 05:00:00 on 2026-06-07.
The best air quality in Cahokia Heights, Illinois was recorded at 12:00:00 on 2026-06-08.
The real-time air quality index in Cahokia Heights, Illinois is 22, currently categorized as Good.
The most common pollutant in Cahokia Heights, Illinois is PM2.5.
If the air quality in Cahokia Heights, Illinois is poor, limit outdoor activities and use a mask to safeguard your health.
The measured PM2.5 levels in Cahokia Heights, Illinois at present are 3.982 μg/m3.
The current PM10 levels in Cahokia Heights, Illinois are 19.766 μg/m3.
The current carbon monoxide (CO) level in Cahokia Heights, Illinois is 0.239 ppm.
The current sulfur dioxide (SO2) levels in Cahokia Heights, Illinois are 0.257 ppb.
The current ozone (O3) levels at Cahokia Heights, Illinois is 19.8 ppm.
The current nitrogen dioxide (NO2) levels at Cahokia Heights, Illinois is 6.357 ppb.
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