Stay updated with real-time air quality in Mount Prospect, 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)
22
Good
Mount Prospect, Illinois
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
3.51 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
13.98 μg/m³
0
55
155
255
425
605+
20.46 ppb
0
55
71
86
201
201+
0.27 ppb
0
36
76
186
605
1005+
6.29 ppb
0
54
101
361
1250
2050+
0.21 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Mount Prospect, Illinois
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AQI 20
Good
3.27μg/m³
PM2.5
13.44μg/m³
PM10
22.50ppb
O3
0.37ppb
SO2
10.43ppb
NO2
0.17ppm
CO
AQI 23
Good
3.07μg/m³
PM2.5
13.06μg/m³
PM10
24.54ppb
O3
0.35ppb
SO2
13.30ppb
NO2
0.17ppm
CO
AQI 20
Good
3.41μg/m³
PM2.5
15.15μg/m³
PM10
21.80ppb
O3
0.36ppb
SO2
10.68ppb
NO2
0.17ppm
CO
AQI 22
Good
3.05μg/m³
PM2.5
13.15μg/m³
PM10
24.43ppb
O3
0.35ppb
SO2
13.31ppb
NO2
0.17ppm
CO
AQI 20
Good
3.38μg/m³
PM2.5
14.86μg/m³
PM10
21.63ppb
O3
0.36ppb
SO2
11.48ppb
NO2
0.17ppm
CO
AQI 21
Good
3.20μg/m³
PM2.5
12.48μg/m³
PM10
22.87ppb
O3
0.38ppb
SO2
10.31ppb
NO2
0.17ppm
CO
Air quality and pollutant data for Illinois, USA are sourced from ground-based monitors and satellites, adhering to US EPA standards. Machine learning and advanced algorithms enhance the data by incorporating local variables like traffic and population density, ensuring high accuracy and dependability.
Source: Ambee Data Sources
The air quality information for Mount Prospect, Illinois is updated every hour for accuracy.
In the past 24 hours, the air quality in Mount Prospect, Illinois was at its worst at 04:00:00 on 2026-03-10.
In the last 24 hours, the best air quality in Mount Prospect, Illinois was observed at 03:00:00 on 2026-03-11.
As of now, the AQI in Mount Prospect, Illinois is 22, indicating Good conditions.
Mount Prospect, Illinois air has the highest levels of PM2.5.
Poor air quality in Mount Prospect, Illinois means it's advisable to stay indoors and wear a mask for your protection.
PM2.5 levels in Mount Prospect, Illinois are currently 3.509 μg/m3.
The PM10 concentration in Mount Prospect, Illinois is 13.979 μg/m3 at the moment.
The current carbon monoxide (CO) concentration in Mount Prospect, Illinois is 0.208 ppm.
Currently, Mount Prospect, Illinois has a sulfur dioxide (SO2) concentration of 0.268 ppb.
The current ozone (O3) level in Mount Prospect, Illinois at the moment is 20.459 ppm.
Nitrogen dioxide (NO2) level in Mount Prospect, Illinois at the moment is 6.291 ppb.
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