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)
33
Good
Prospect Heights, Illinois
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
5.89 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
24.37 μg/m³
0
55
155
255
425
605+
16.01 ppb
0
55
71
86
201
201+
1.78 ppb
0
36
76
186
605
1005+
5.08 ppb
0
54
101
361
1250
2050+
0.17 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Moderate
Prospect Heights, Illinois
Prospect Heights, Illinois
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AQI 90
Moderate
29.78μg/m³
PM2.5
130.04μg/m³
PM10
7.77ppb
O3
0.99ppb
SO2
16.45ppb
NO2
0.47ppm
CO
AQI 52
Moderate
9.85μg/m³
PM2.5
46.34μg/m³
PM10
5.84ppb
O3
1.00ppb
SO2
20.78ppb
NO2
0.45ppm
CO
AQI 82
Moderate
26.35μg/m³
PM2.5
112.38μg/m³
PM10
7.72ppb
O3
1.00ppb
SO2
16.78ppb
NO2
0.48ppm
CO
AQI 52
Moderate
9.66μg/m³
PM2.5
45.13μg/m³
PM10
6.37ppb
O3
1.00ppb
SO2
20.90ppb
NO2
0.45ppm
CO
AQI 52
Moderate
9.76μg/m³
PM2.5
45.10μg/m³
PM10
6.27ppb
O3
1.01ppb
SO2
17.96ppb
NO2
0.46ppm
CO
AQI 79
Moderate
24.14μg/m³
PM2.5
79.70μg/m³
PM10
5.00ppb
O3
1.02ppb
SO2
15.49ppb
NO2
0.47ppm
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 04:00:00 on 2025-10-25.
In the last 24 hrs, the best air quality in Prospect Heights, Illinois was observed at 05:00:00 on 2025-10-24.
The current air quality in Prospect Heights, Illinois is 86, categorized as Moderate 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 27.971 μg/m3.
The current PM10 concentration at Prospect Heights, Illinois is 120.757 μg/m3.
The current carbon monoxide (CO) concentration at Prospect Heights, Illinois is 0.476 ppm.
The current sulfur dioxide (SO2) concentration at Prospect Heights, Illinois is 0.993 ppb.
The current ozone (O3) concentration at Prospect Heights, Illinois is 7.734 ppm.
The current nitrogen dioxide (NO2) concentration at Prospect Heights, Illinois is 16.621 ppb.
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