Stay updated with real-time air quality in Westmont, 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
Westmont, Illinois
Last updated: ... (Local time)
Good
Fine
Moderate
Poor
Very poor
Hazardous
3.50 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
15.61 μg/m³
0
55
155
255
425
605+
17.67 ppb
0
55
71
86
201
201+
0.74 ppb
0
36
76
186
605
1005+
4.25 ppb
0
54
101
361
1250
2050+
0.18 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Moderate
Westmont, Illinois
Westmont, Illinois
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AQI 22
Good
4.09μg/m³
PM2.5
18.05μg/m³
PM10
15.15ppb
O3
0.71ppb
SO2
4.23ppb
NO2
0.18ppm
CO
AQI 22
Good
3.75μg/m³
PM2.5
15.46μg/m³
PM10
16.08ppb
O3
0.67ppb
SO2
4.27ppb
NO2
0.18ppm
CO
AQI 22
Good
3.82μg/m³
PM2.5
16.66μg/m³
PM10
16.32ppb
O3
0.71ppb
SO2
4.24ppb
NO2
0.20ppm
CO
AQI 22
Good
4.05μg/m³
PM2.5
18.07μg/m³
PM10
14.66ppb
O3
0.71ppb
SO2
4.22ppb
NO2
0.18ppm
CO
AQI 22
Good
3.92μg/m³
PM2.5
17.34μg/m³
PM10
15.70ppb
O3
0.71ppb
SO2
4.23ppb
NO2
0.19ppm
CO
AQI 22
Good
3.81μg/m³
PM2.5
15.19μg/m³
PM10
16.00ppb
O3
0.63ppb
SO2
4.28ppb
NO2
0.18ppm
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 Westmont, Illinois is updated every hour.
The worst air quality in Westmont, Illinois in the last 24 hours was observed at 04:00:00 on 2025-09-05.
In the last 24 hrs, the best air quality in Westmont, Illinois was observed at 02:00:00 on 2025-09-06.
The current air quality in Westmont, Illinois is 18, categorized as Good based on real-time data.
The most common pollutant in Westmont, Illinois is O3.
If the air quality in Westmont, Illinois is poor, consider staying indoors and wearing a mask to protect yourself.
The current PM2.5 concentration at Westmont, Illinois is 2.883 μg/m3.
The current PM10 concentration at Westmont, Illinois is 13.542 μg/m3.
The current carbon monoxide (CO) concentration at Westmont, Illinois is 0.176 ppm.
The current sulfur dioxide (SO2) concentration at Westmont, Illinois is 0.718 ppb.
The current ozone (O3) concentration at Westmont, Illinois is 18.703 ppm.
The current nitrogen dioxide (NO2) concentration at Westmont, Illinois is 2.916 ppb.
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