Stay updated with real-time air quality in West Chicago, 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)
37
Good
West Chicago, Illinois
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
5.50 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
23.61 μg/m³
0
55
155
255
425
605+
39.95 ppb
0
55
71
86
201
201+
0.41 ppb
0
36
76
186
605
1005+
2.79 ppb
0
54
101
361
1250
2050+
0.16 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Low
West Chicago, Illinois
West Chicago, Illinois
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AQI 39
Good
5.57μg/m³
PM2.5
24.55μg/m³
PM10
42.06ppb
O3
0.42ppb
SO2
2.67ppb
NO2
0.16ppm
CO
AQI 38
Good
5.60μg/m³
PM2.5
24.83μg/m³
PM10
41.43ppb
O3
0.43ppb
SO2
2.64ppb
NO2
0.16ppm
CO
AQI 41
Good
5.41μg/m³
PM2.5
23.65μg/m³
PM10
43.84ppb
O3
0.42ppb
SO2
2.72ppb
NO2
0.16ppm
CO
AQI 38
Good
5.59μg/m³
PM2.5
24.87μg/m³
PM10
40.56ppb
O3
0.43ppb
SO2
2.63ppb
NO2
0.16ppm
CO
AQI 42
Good
5.45μg/m³
PM2.5
24.93μg/m³
PM10
44.75ppb
O3
0.40ppb
SO2
3.00ppb
NO2
0.16ppm
CO
AQI 41
Good
5.23μg/m³
PM2.5
22.97μg/m³
PM10
44.41ppb
O3
0.42ppb
SO2
2.72ppb
NO2
0.16ppm
CO
Air quality data and pollutant measurements for Illinois, USA adhere to strict US EPA standards. The data is collected from multiple reliable sources, including satellites and ground-based monitoring stations. This data is further analyzed and enhanced using machine learning and advanced algorithms that factor in elements such as traffic and population density, ensuring accurate and reliable results.
Source: Ambee Data Sources
The air quality for West Chicago, Illinois is updated every hour.
The worst air quality in West Chicago, Illinois in the last 24 hours was observed at 11:00:00 on 2026-06-08.
In the last 24 hrs, the best air quality in West Chicago, Illinois was observed at 10:00:00 on 2026-06-09.
The current air quality in West Chicago, Illinois is 37, categorized as Good based on real-time data.
The most common pollutant in West Chicago, Illinois is O3.
If the air quality in West Chicago, Illinois is poor, consider staying indoors and wearing a mask to protect yourself.
The current PM2.5 concentration at West Chicago, Illinois is 5.502 μg/m3.
The current PM10 concentration at West Chicago, Illinois is 23.613 μg/m3.
The current carbon monoxide (CO) concentration at West Chicago, Illinois is 0.159 ppm.
The current sulfur dioxide (SO2) concentration at West Chicago, Illinois is 0.415 ppb.
The current ozone (O3) concentration at West Chicago, Illinois is 39.949 ppm.
The current nitrogen dioxide (NO2) concentration at West Chicago, Illinois is 2.788 ppb.
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