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

Good
Fine
Moderate
Poor
Very poor
Hazardous
5.55 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
25.25 μg/m³
0
55
155
255
425
605+
32.91 ppb
0
55
71
86
201
201+
1.37 ppb
0
36
76
186
605
1005+
8.03 ppb
0
54
101
361
1250
2050+
0.21 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
High
Westmont, Illinois
Westmont, Illinois
Scroll To Air Quality MapLoading...
AQI 36
Good
6.18μg/m³
PM2.5
27.39μg/m³
PM10
39.33ppb
O3
1.66ppb
SO2
5.51ppb
NO2
0.20ppm
CO
AQI 38
Good
5.58μg/m³
PM2.5
23.45μg/m³
PM10
40.84ppb
O3
1.55ppb
SO2
5.58ppb
NO2
0.20ppm
CO
AQI 38
Good
5.95μg/m³
PM2.5
25.63μg/m³
PM10
41.26ppb
O3
1.62ppb
SO2
5.53ppb
NO2
0.20ppm
CO
AQI 35
Good
6.38μg/m³
PM2.5
28.84μg/m³
PM10
38.43ppb
O3
1.71ppb
SO2
5.47ppb
NO2
0.20ppm
CO
AQI 38
Good
6.15μg/m³
PM2.5
26.97μg/m³
PM10
40.92ppb
O3
1.67ppb
SO2
5.53ppb
NO2
0.20ppm
CO
AQI 38
Good
5.35μg/m³
PM2.5
21.79μg/m³
PM10
41.00ppb
O3
1.51ppb
SO2
5.68ppb
NO2
0.20ppm
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 03:00:00 on 2026-10-07.
In the last 24 hrs, the best air quality in Westmont, Illinois was observed at 08:00:00 on 2026-10-07.
The current air quality in Westmont, Illinois is 36, 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 6.2 μg/m3.
The current PM10 concentration at Westmont, Illinois is 26.576 μg/m3.
The current carbon monoxide (CO) concentration at Westmont, Illinois is 0.196 ppm.
The current sulfur dioxide (SO2) concentration at Westmont, Illinois is 1.614 ppb.
The current ozone (O3) concentration at Westmont, Illinois is 39.215 ppm.
The current nitrogen dioxide (NO2) concentration at Westmont, Illinois is 5.542 ppb.
All Rights Reserved © Ambee Inc. 2025