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)
122
Unhealthy for sensitive groups
Forest Park, Illinois
Last updated: ... (Local time)
Good
Fine
Moderate
Poor
Very poor
Hazardous
43.68 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
194.93 μg/m³
0
55
155
255
425
605+
45.85 ppb
0
55
71
86
201
201+
1.89 ppb
0
36
76
186
605
1005+
6.62 ppb
0
54
101
361
1250
2050+
0.27 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Low
Forest Park, Illinois
Forest Park, Illinois
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AQI 117
Unhealthy for sensitive groups
41.70μg/m³
PM2.5
184.73μg/m³
PM10
12.06ppb
O3
2.06ppb
SO2
14.72ppb
NO2
0.37ppm
CO
AQI 118
Unhealthy for sensitive groups
42.35μg/m³
PM2.5
188.57μg/m³
PM10
11.53ppb
O3
2.01ppb
SO2
14.72ppb
NO2
0.37ppm
CO
AQI 115
Unhealthy for sensitive groups
40.55μg/m³
PM2.5
180.44μg/m³
PM10
12.29ppb
O3
2.16ppb
SO2
14.72ppb
NO2
0.38ppm
CO
AQI 115
Unhealthy for sensitive groups
40.86μg/m³
PM2.5
181.58μg/m³
PM10
11.39ppb
O3
2.12ppb
SO2
14.72ppb
NO2
0.38ppm
CO
AQI 122
Unhealthy for sensitive groups
43.53μg/m³
PM2.5
193.26μg/m³
PM10
12.06ppb
O3
1.92ppb
SO2
14.72ppb
NO2
0.36ppm
CO
AQI 117
Unhealthy for sensitive groups
42.37μg/m³
PM2.5
187.17μg/m³
PM10
11.30ppb
O3
1.97ppb
SO2
14.72ppb
NO2
0.37ppm
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 11:00:00 on 2025-07-14.
In the last 24 hrs, the best air quality in Forest Park, Illinois was observed at 02:00:00 on 2025-07-13.
The current air quality in Forest Park, Illinois is 115, categorized as Unhealthy for Sensitive Groups 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 40.833 μg/m3.
The current PM10 concentration at Forest Park, Illinois is 181.481 μg/m3.
The current carbon monoxide (CO) concentration at Forest Park, Illinois is 0.379 ppm.
The current sulfur dioxide (SO2) concentration at Forest Park, Illinois is 2.129 ppb.
The current ozone (O3) concentration at Forest Park, Illinois is 11.523 ppm.
The current nitrogen dioxide (NO2) concentration at Forest Park, Illinois is 14.722 ppb.
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