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)
49
Good
Forest Park, Illinois
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
9.24 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
41.20 μg/m³
0
55
155
255
425
605+
22.50 ppb
0
55
71
86
201
201+
0.75 ppb
0
36
76
186
605
1005+
3.67 ppb
0
54
101
361
1250
2050+
0.23 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Moderate
Forest Park, Illinois
Forest Park, Illinois
Scroll To Air Quality MapLoading...
AQI 54
Moderate
10.88μg/m³
PM2.5
49.33μg/m³
PM10
8.59ppb
O3
0.97ppb
SO2
6.40ppb
NO2
0.16ppm
CO
AQI 52
Moderate
10.40μg/m³
PM2.5
46.45μg/m³
PM10
8.11ppb
O3
0.96ppb
SO2
6.54ppb
NO2
0.16ppm
CO
AQI 54
Moderate
10.91μg/m³
PM2.5
48.50μg/m³
PM10
8.25ppb
O3
0.99ppb
SO2
6.28ppb
NO2
0.16ppm
CO
AQI 54
Moderate
10.76μg/m³
PM2.5
47.97μg/m³
PM10
8.15ppb
O3
0.97ppb
SO2
6.41ppb
NO2
0.16ppm
CO
AQI 52
Moderate
10.36μg/m³
PM2.5
47.06μg/m³
PM10
8.49ppb
O3
0.95ppb
SO2
6.59ppb
NO2
0.16ppm
CO
AQI 52
Moderate
9.98μg/m³
PM2.5
45.89μg/m³
PM10
9.21ppb
O3
0.96ppb
SO2
6.47ppb
NO2
0.16ppm
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 08:00:00 on 2025-10-25.
In the last 24 hrs, the best air quality in Forest Park, Illinois was observed at 08:00:00 on 2025-10-24.
The current air quality in Forest Park, Illinois is 54, categorized as Moderate 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 10.895 μg/m3.
The current PM10 concentration at Forest Park, Illinois is 48.549 μg/m3.
The current carbon monoxide (CO) concentration at Forest Park, Illinois is 0.161 ppm.
The current sulfur dioxide (SO2) concentration at Forest Park, Illinois is 0.977 ppb.
The current ozone (O3) concentration at Forest Park, Illinois is 8.158 ppm.
The current nitrogen dioxide (NO2) concentration at Forest Park, Illinois is 6.386 ppb.
All Rights Reserved © Ambee Inc. 2025