Stay updated with real-time air quality in Glen Ellyn, 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)
27
Good
Glen Ellyn, Illinois
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
5.48 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
22.99 μg/m³
0
55
155
255
425
605+
25.29 ppb
0
55
71
86
201
201+
0.65 ppb
0
36
76
186
605
1005+
22.06 ppb
0
54
101
361
1250
2050+
0.21 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Low
Glen Ellyn, Illinois
Glen Ellyn, Illinois
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AQI 36
Good
4.51μg/m³
PM2.5
18.87μg/m³
PM10
38.81ppb
O3
0.80ppb
SO2
3.60ppb
NO2
0.11ppm
CO
AQI 30
Good
4.51μg/m³
PM2.5
19.54μg/m³
PM10
32.39ppb
O3
0.79ppb
SO2
4.08ppb
NO2
0.11ppm
CO
AQI 34
Good
4.49μg/m³
PM2.5
18.69μg/m³
PM10
36.64ppb
O3
0.81ppb
SO2
3.96ppb
NO2
0.11ppm
CO
AQI 31
Good
4.59μg/m³
PM2.5
19.58μg/m³
PM10
33.20ppb
O3
0.82ppb
SO2
4.51ppb
NO2
0.11ppm
CO
AQI 34
Good
4.53μg/m³
PM2.5
19.47μg/m³
PM10
36.74ppb
O3
0.79ppb
SO2
3.62ppb
NO2
0.11ppm
CO
AQI 35
Good
4.56μg/m³
PM2.5
19.59μg/m³
PM10
38.30ppb
O3
0.80ppb
SO2
3.58ppb
NO2
0.11ppm
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 Glen Ellyn, Illinois is updated on an hourly basis.
The worst air quality in Glen Ellyn, Illinois was recorded at 02:00:00 on 2026-10-05.
The best air quality in Glen Ellyn, Illinois was recorded at 07:00:00 on 2026-10-05.
The real-time air quality index in Glen Ellyn, Illinois is 35, currently categorized as Good.
The most common pollutant in Glen Ellyn, Illinois is O3.
If the air quality in Glen Ellyn, Illinois is poor, limit outdoor activities and use a mask to safeguard your health.
The measured PM2.5 levels in Glen Ellyn, Illinois at present are 4.47 μg/m3.
The current PM10 levels in Glen Ellyn, Illinois are 18.438 μg/m3.
The current carbon monoxide (CO) level in Glen Ellyn, Illinois is 0.113 ppm.
The current sulfur dioxide (SO2) levels in Glen Ellyn, Illinois are 0.806 ppb.
The current ozone (O3) levels at Glen Ellyn, Illinois is 38.305 ppm.
The current nitrogen dioxide (NO2) levels at Glen Ellyn, Illinois is 3.657 ppb.
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