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)
36
Good
Prospect Heights, Illinois
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
3.07 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
13.57 μg/m³
0
55
155
255
425
605+
39.20 ppb
0
55
71
86
201
201+
0.50 ppb
0
36
76
186
605
1005+
4.16 ppb
0
54
101
361
1250
2050+
0.15 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 36
Good
3.06μg/m³
PM2.5
13.44μg/m³
PM10
38.84ppb
O3
0.50ppb
SO2
4.16ppb
NO2
0.15ppm
CO
AQI 36
Good
2.95μg/m³
PM2.5
13.04μg/m³
PM10
39.21ppb
O3
0.50ppb
SO2
4.49ppb
NO2
0.15ppm
CO
AQI 37
Good
3.08μg/m³
PM2.5
13.67μg/m³
PM10
39.58ppb
O3
0.50ppb
SO2
4.17ppb
NO2
0.15ppm
CO
AQI 37
Good
2.98μg/m³
PM2.5
12.62μg/m³
PM10
39.65ppb
O3
0.49ppb
SO2
4.57ppb
NO2
0.15ppm
CO
AQI 35
Good
3.00μg/m³
PM2.5
12.61μg/m³
PM10
37.74ppb
O3
0.49ppb
SO2
4.68ppb
NO2
0.15ppm
CO
AQI 39
Good
3.00μg/m³
PM2.5
12.62μg/m³
PM10
41.97ppb
O3
0.49ppb
SO2
4.71ppb
NO2
0.15ppm
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 02:00:00 on 2026-06-12.
In the last 24 hrs, the best air quality in Prospect Heights, Illinois was observed at 02:00:00 on 2026-06-12.
The current air quality in Prospect Heights, Illinois is 36, 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 3.073 μg/m3.
The current PM10 concentration at Prospect Heights, Illinois is 13.567 μg/m3.
The current carbon monoxide (CO) concentration at Prospect Heights, Illinois is 0.151 ppm.
The current sulfur dioxide (SO2) concentration at Prospect Heights, Illinois is 0.503 ppb.
The current ozone (O3) concentration at Prospect Heights, Illinois is 39.197 ppm.
The current nitrogen dioxide (NO2) concentration at Prospect Heights, Illinois is 4.158 ppb.
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