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)
44
Good
Prospect Heights, Illinois
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
7.52 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
31.95 μg/m³
0
55
155
255
425
605+
22.39 ppb
0
55
71
86
201
201+
2.24 ppb
0
36
76
186
605
1005+
17.51 ppb
0
54
101
361
1250
2050+
0.24 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 44
Good
8.04μg/m³
PM2.5
34.33μg/m³
PM10
17.09ppb
O3
2.08ppb
SO2
17.05ppb
NO2
0.24ppm
CO
AQI 38
Good
6.75μg/m³
PM2.5
32.84μg/m³
PM10
15.63ppb
O3
2.01ppb
SO2
17.18ppb
NO2
0.24ppm
CO
AQI 38
Good
7.32μg/m³
PM2.5
29.78μg/m³
PM10
18.09ppb
O3
2.07ppb
SO2
16.92ppb
NO2
0.24ppm
CO
AQI 33
Good
6.49μg/m³
PM2.5
27.01μg/m³
PM10
16.87ppb
O3
1.99ppb
SO2
17.02ppb
NO2
0.24ppm
CO
AQI 33
Good
5.68μg/m³
PM2.5
21.00μg/m³
PM10
16.03ppb
O3
1.94ppb
SO2
15.54ppb
NO2
0.24ppm
CO
AQI 33
Good
5.57μg/m³
PM2.5
17.31μg/m³
PM10
18.61ppb
O3
1.89ppb
SO2
12.37ppb
NO2
0.24ppm
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 06:00:00 on 2026-01-24.
In the last 24 hrs, the best air quality in Prospect Heights, Illinois was observed at 06:00:00 on 2026-01-24.
The current air quality in Prospect Heights, Illinois is 44, categorized as Good based on real-time data.
The most common pollutant in Prospect Heights, Illinois is PM2.5.
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 7.517 μg/m3.
The current PM10 concentration at Prospect Heights, Illinois is 31.948 μg/m3.
The current carbon monoxide (CO) concentration at Prospect Heights, Illinois is 0.236 ppm.
The current sulfur dioxide (SO2) concentration at Prospect Heights, Illinois is 2.244 ppb.
The current ozone (O3) concentration at Prospect Heights, Illinois is 22.392 ppm.
The current nitrogen dioxide (NO2) concentration at Prospect Heights, Illinois is 17.513 ppb.
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