Stay updated with real-time air quality in Summit, 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)
25
Good
Summit, Illinois
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
4.21 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
18.46 μg/m³
0
55
155
255
425
605+
27.33 ppb
0
55
71
86
201
201+
0.59 ppb
0
36
76
186
605
1005+
12.88 ppb
0
54
101
361
1250
2050+
0.16 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Low
Summit, Illinois
Summit, Illinois
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AQI 25
Good
4.24μg/m³
PM2.5
18.49μg/m³
PM10
27.22ppb
O3
0.59ppb
SO2
13.77ppb
NO2
0.16ppm
CO
AQI 25
Good
4.21μg/m³
PM2.5
18.33μg/m³
PM10
27.36ppb
O3
0.60ppb
SO2
13.55ppb
NO2
0.16ppm
CO
AQI 25
Good
4.03μg/m³
PM2.5
18.01μg/m³
PM10
27.36ppb
O3
0.57ppb
SO2
10.10ppb
NO2
0.16ppm
CO
AQI 25
Good
4.04μg/m³
PM2.5
17.96μg/m³
PM10
27.06ppb
O3
0.57ppb
SO2
10.55ppb
NO2
0.16ppm
CO
AQI 25
Good
4.16μg/m³
PM2.5
18.21μg/m³
PM10
27.35ppb
O3
0.59ppb
SO2
12.62ppb
NO2
0.16ppm
CO
AQI 25
Good
4.04μg/m³
PM2.5
17.61μg/m³
PM10
27.47ppb
O3
0.60ppb
SO2
12.57ppb
NO2
0.16ppm
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 Summit, Illinois is updated every hour.
The worst air quality in Summit, Illinois in the last 24 hours was observed at 03:00:00 on 2026-10-05.
In the last 24 hrs, the best air quality in Summit, Illinois was observed at 12:00:00 on 2026-10-06.
The current air quality in Summit, Illinois is 25, categorized as Good based on real-time data.
The most common pollutant in Summit, Illinois is O3.
If the air quality in Summit, Illinois is poor, consider staying indoors and wearing a mask to protect yourself.
The current PM2.5 concentration at Summit, Illinois is 4.209 μg/m3.
The current PM10 concentration at Summit, Illinois is 18.461 μg/m3.
The current carbon monoxide (CO) concentration at Summit, Illinois is 0.162 ppm.
The current sulfur dioxide (SO2) concentration at Summit, Illinois is 0.588 ppb.
The current ozone (O3) concentration at Summit, Illinois is 27.333 ppm.
The current nitrogen dioxide (NO2) concentration at Summit, Illinois is 12.885 ppb.
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