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)
33
Good
West Chicago, Illinois
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
5.77 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
23.76 μg/m³
0
55
155
255
425
605+
28.56 ppb
0
55
71
86
201
201+
1.34 ppb
0
36
76
186
605
1005+
6.00 ppb
0
54
101
361
1250
2050+
0.22 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 33
Good
5.78μg/m³
PM2.5
25.38μg/m³
PM10
29.74ppb
O3
1.03ppb
SO2
5.04ppb
NO2
0.17ppm
CO
AQI 38
Good
7.10μg/m³
PM2.5
31.21μg/m³
PM10
29.47ppb
O3
1.04ppb
SO2
5.02ppb
NO2
0.18ppm
CO
AQI 28
Good
5.40μg/m³
PM2.5
23.59μg/m³
PM10
29.69ppb
O3
1.01ppb
SO2
5.05ppb
NO2
0.17ppm
CO
AQI 38
Good
6.61μg/m³
PM2.5
30.35μg/m³
PM10
29.85ppb
O3
1.04ppb
SO2
4.92ppb
NO2
0.18ppm
CO
AQI 33
Good
6.15μg/m³
PM2.5
22.16μg/m³
PM10
29.42ppb
O3
0.97ppb
SO2
5.25ppb
NO2
0.18ppm
CO
AQI 33
Good
5.58μg/m³
PM2.5
24.20μg/m³
PM10
29.60ppb
O3
1.00ppb
SO2
5.16ppb
NO2
0.17ppm
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 09:00:00 on 2026-01-23.
In the last 24 hrs, the best air quality in West Chicago, Illinois was observed at 01:00:00 on 2026-01-23.
The current air quality in West Chicago, Illinois is 33, categorized as Good based on real-time data.
The most common pollutant in West Chicago, Illinois is PM2.5.
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 5.772 μg/m3.
The current PM10 concentration at West Chicago, Illinois is 23.757 μg/m3.
The current carbon monoxide (CO) concentration at West Chicago, Illinois is 0.223 ppm.
The current sulfur dioxide (SO2) concentration at West Chicago, Illinois is 1.338 ppb.
The current ozone (O3) concentration at West Chicago, Illinois is 28.559 ppm.
The current nitrogen dioxide (NO2) concentration at West Chicago, Illinois is 6.002 ppb.
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