Stay updated with real-time air quality in Forest Park, 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)
38
Good
Forest Park, Illinois
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
6.84 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
30.53 μg/m³
0
55
155
255
425
605+
26.97 ppb
0
55
71
86
201
201+
0.45 ppb
0
36
76
186
605
1005+
2.82 ppb
0
54
101
361
1250
2050+
0.25 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Very high
Forest Park, Illinois
Forest Park, Illinois
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AQI 38
Good
6.80μg/m³
PM2.5
30.16μg/m³
PM10
20.56ppb
O3
0.41ppb
SO2
2.78ppb
NO2
0.18ppm
CO
AQI 44
Good
7.80μg/m³
PM2.5
34.92μg/m³
PM10
22.45ppb
O3
0.41ppb
SO2
2.77ppb
NO2
0.18ppm
CO
AQI 38
Good
6.79μg/m³
PM2.5
30.55μg/m³
PM10
22.30ppb
O3
0.41ppb
SO2
2.81ppb
NO2
0.19ppm
CO
AQI 38
Good
7.34μg/m³
PM2.5
32.97μg/m³
PM10
23.66ppb
O3
0.41ppb
SO2
2.77ppb
NO2
0.18ppm
CO
AQI 44
Good
7.75μg/m³
PM2.5
34.29μg/m³
PM10
19.55ppb
O3
0.40ppb
SO2
2.79ppb
NO2
0.18ppm
CO
AQI 38
Good
7.18μg/m³
PM2.5
31.39μg/m³
PM10
21.11ppb
O3
0.40ppb
SO2
2.86ppb
NO2
0.18ppm
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 Forest Park, Illinois is updated every hour.
The worst air quality in Forest Park, Illinois in the last 24 hours was observed at 02:00:00 on 2026-04-27.
In the last 24 hrs, the best air quality in Forest Park, Illinois was observed at 10:00:00 on 2026-04-27.
The current air quality in Forest Park, Illinois is 38, categorized as Good based on real-time data.
The most common pollutant in Forest Park, Illinois is PM2.5.
If the air quality in Forest Park, Illinois is poor, consider staying indoors and wearing a mask to protect yourself.
The current PM2.5 concentration at Forest Park, Illinois is 7.244 μg/m3.
The current PM10 concentration at Forest Park, Illinois is 32.536 μg/m3.
The current carbon monoxide (CO) concentration at Forest Park, Illinois is 0.185 ppm.
The current sulfur dioxide (SO2) concentration at Forest Park, Illinois is 0.413 ppb.
The current ozone (O3) concentration at Forest Park, Illinois is 23.42 ppm.
The current nitrogen dioxide (NO2) concentration at Forest Park, Illinois is 2.767 ppb.
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