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)
38
Good
Downers Grove, Illinois
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
6.90 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
31.02 μg/m³
0
55
155
255
425
605+
17.82 ppb
0
55
71
86
201
201+
1.28 ppb
0
36
76
186
605
1005+
17.27 ppb
0
54
101
361
1250
2050+
0.23 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Low
Downers Grove, Illinois
Downers Grove, Illinois
Scroll To Air Quality MapLoading...
AQI 44
Good
7.58μg/m³
PM2.5
35.04μg/m³
PM10
23.06ppb
O3
0.82ppb
SO2
13.11ppb
NO2
0.29ppm
CO
AQI 38
Good
6.65μg/m³
PM2.5
29.85μg/m³
PM10
21.97ppb
O3
0.80ppb
SO2
12.57ppb
NO2
0.29ppm
CO
AQI 44
Good
8.28μg/m³
PM2.5
36.69μg/m³
PM10
19.34ppb
O3
0.77ppb
SO2
12.77ppb
NO2
0.30ppm
CO
AQI 38
Good
7.42μg/m³
PM2.5
34.98μg/m³
PM10
23.00ppb
O3
0.82ppb
SO2
13.13ppb
NO2
0.29ppm
CO
AQI 38
Good
6.91μg/m³
PM2.5
35.14μg/m³
PM10
22.79ppb
O3
0.82ppb
SO2
13.24ppb
NO2
0.29ppm
CO
AQI 44
Good
8.31μg/m³
PM2.5
35.47μg/m³
PM10
21.97ppb
O3
0.80ppb
SO2
12.94ppb
NO2
0.29ppm
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 07:00:00 on 2026-01-23.
The best air quality in Downers Grove, Illinois was recorded at 08:00:00 on 2026-01-23.
The real-time air quality index in Downers Grove, Illinois is 38, currently categorized as Good.
The most common pollutant in Downers Grove, Illinois is PM2.5.
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 6.897 μg/m3.
The current PM10 levels in Downers Grove, Illinois are 31.018 μg/m3.
The current carbon monoxide (CO) level in Downers Grove, Illinois is 0.228 ppm.
The current sulfur dioxide (SO2) levels in Downers Grove, Illinois are 1.285 ppb.
The current ozone (O3) levels at Downers Grove, Illinois is 17.822 ppm.
The current nitrogen dioxide (NO2) levels at Downers Grove, Illinois is 17.271 ppb.
All Rights Reserved © Ambee Inc. 2025