Stay updated with real-time air quality in Downers Grove, 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)
16
Good
Downers Grove, Illinois
Last updated: ... (Local time)
Good
Fine
Moderate
Poor
Very poor
Hazardous
3.05 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
13.12 μg/m³
0
55
155
255
425
605+
17.07 ppb
0
55
71
86
201
201+
0.65 ppb
0
36
76
186
605
1005+
2.92 ppb
0
54
101
361
1250
2050+
0.17 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Moderate
Downers Grove, Illinois
Downers Grove, Illinois
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AQI 22
Good
3.50μg/m³
PM2.5
15.61μg/m³
PM10
17.67ppb
O3
0.74ppb
SO2
4.25ppb
NO2
0.18ppm
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
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
3.82μg/m³
PM2.5
16.66μg/m³
PM10
16.32ppb
O3
0.71ppb
SO2
4.24ppb
NO2
0.20ppm
CO
AQI 22
Good
3.62μg/m³
PM2.5
15.01μg/m³
PM10
16.45ppb
O3
0.68ppb
SO2
4.28ppb
NO2
0.18ppm
CO
AQI 22
Good
3.91μg/m³
PM2.5
16.29μg/m³
PM10
15.85ppb
O3
0.67ppb
SO2
4.27ppb
NO2
0.18ppm
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 Downers Grove, Illinois is updated on an hourly basis.
The worst air quality in Downers Grove, Illinois was recorded at 01:00:00 on 2025-09-05.
The best air quality in Downers Grove, Illinois was recorded at 09:00:00 on 2025-09-05.
The real-time air quality index in Downers Grove, Illinois is 21, currently categorized as Good.
The most common pollutant in Downers Grove, Illinois is O3.
If the air quality in Downers Grove, Illinois is poor, limit outdoor activities and use a mask to safeguard your health.
The measured PM2.5 levels in Downers Grove, Illinois at present are 2.748 μg/m3.
The current PM10 levels in Downers Grove, Illinois are 11.471 μg/m3.
The current carbon monoxide (CO) level in Downers Grove, Illinois is 0.16 ppm.
The current sulfur dioxide (SO2) levels in Downers Grove, Illinois are 3.631 ppb.
The current ozone (O3) levels at Downers Grove, Illinois is 23.168 ppm.
The current nitrogen dioxide (NO2) levels at Downers Grove, Illinois is 6.779 ppb.
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