Stay updated with real-time air quality in Prospect Heights, 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)
23
Good
Prospect Heights, Illinois
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
2.57 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
10.77 μg/m³
0
55
155
255
425
605+
9.06 ppb
0
55
71
86
201
201+
1.36 ppb
0
36
76
186
605
1005+
24.23 ppb
0
54
101
361
1250
2050+
0.20 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Low
Prospect Heights, Illinois
Prospect Heights, Illinois
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AQI 24
Good
3.64μg/m³
PM2.5
15.73μg/m³
PM10
25.63ppb
O3
0.60ppb
SO2
15.75ppb
NO2
0.21ppm
CO
AQI 27
Good
4.94μg/m³
PM2.5
20.83μg/m³
PM10
20.11ppb
O3
0.60ppb
SO2
24.11ppb
NO2
0.21ppm
CO
AQI 24
Good
3.54μg/m³
PM2.5
14.56μg/m³
PM10
26.38ppb
O3
0.60ppb
SO2
15.02ppb
NO2
0.21ppm
CO
AQI 27
Good
5.01μg/m³
PM2.5
20.96μg/m³
PM10
23.87ppb
O3
0.60ppb
SO2
20.11ppb
NO2
0.21ppm
CO
AQI 27
Good
4.94μg/m³
PM2.5
21.17μg/m³
PM10
19.09ppb
O3
0.58ppb
SO2
25.27ppb
NO2
0.21ppm
CO
AQI 24
Good
3.40μg/m³
PM2.5
19.11μg/m³
PM10
26.06ppb
O3
0.56ppb
SO2
14.74ppb
NO2
0.21ppm
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 Prospect Heights, Illinois is updated every hour.
The worst air quality in Prospect Heights, 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 Prospect Heights, Illinois was observed at 02:00:00 on 2026-10-06.
The current air quality in Prospect Heights, Illinois is 24, categorized as Good based on real-time data.
The most common pollutant in Prospect Heights, Illinois is O3.
If the air quality in Prospect Heights, Illinois is poor, consider staying indoors and wearing a mask to protect yourself.
The current PM2.5 concentration at Prospect Heights, Illinois is 3.598 μg/m3.
The current PM10 concentration at Prospect Heights, Illinois is 15.188 μg/m3.
The current carbon monoxide (CO) concentration at Prospect Heights, Illinois is 0.208 ppm.
The current sulfur dioxide (SO2) concentration at Prospect Heights, Illinois is 0.601 ppb.
The current ozone (O3) concentration at Prospect Heights, Illinois is 25.96 ppm.
The current nitrogen dioxide (NO2) concentration at Prospect Heights, Illinois is 15.415 ppb.
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