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)
49
Good
Mount Prospect, Illinois
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
8.94 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
39.11 μg/m³
0
55
155
255
425
605+
22.19 ppb
0
55
71
86
201
201+
0.96 ppb
0
36
76
186
605
1005+
21.59 ppb
0
54
101
361
1250
2050+
0.24 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Low
Mount Prospect, Illinois
Mount Prospect, Illinois
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AQI 44
Good
7.87μg/m³
PM2.5
32.42μg/m³
PM10
25.05ppb
O3
1.24ppb
SO2
16.66ppb
NO2
0.32ppm
CO
AQI 52
Moderate
9.69μg/m³
PM2.5
40.55μg/m³
PM10
18.75ppb
O3
1.16ppb
SO2
19.35ppb
NO2
0.30ppm
CO
AQI 44
Good
8.29μg/m³
PM2.5
35.93μg/m³
PM10
24.53ppb
O3
1.23ppb
SO2
16.77ppb
NO2
0.32ppm
CO
AQI 49
Good
9.06μg/m³
PM2.5
44.15μg/m³
PM10
22.33ppb
O3
1.15ppb
SO2
19.28ppb
NO2
0.30ppm
CO
AQI 49
Good
8.64μg/m³
PM2.5
37.57μg/m³
PM10
22.79ppb
O3
1.21ppb
SO2
18.41ppb
NO2
0.31ppm
CO
AQI 44
Good
7.63μg/m³
PM2.5
30.29μg/m³
PM10
25.44ppb
O3
1.24ppb
SO2
16.64ppb
NO2
0.32ppm
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 2025-10-25.
In the last 24 hours, the best air quality in Mount Prospect, Illinois was observed at 08:00:00 on 2025-10-25.
As of now, the AQI in Mount Prospect, Illinois is 49, 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 9.03 μg/m3.
The PM10 concentration in Mount Prospect, Illinois is 38.324 μg/m3 at the moment.
The current carbon monoxide (CO) concentration in Mount Prospect, Illinois is 0.261 ppm.
Currently, Mount Prospect, Illinois has a sulfur dioxide (SO2) concentration of 0.995 ppb.
The current ozone (O3) level in Mount Prospect, Illinois at the moment is 21.826 ppm.
Nitrogen dioxide (NO2) level in Mount Prospect, Illinois at the moment is 21.096 ppb.
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