Stay updated with real-time air quality in Joliet, 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)
112
Unhealthy for sensitive groups
Joliet, Illinois
Last updated: ... (Local time)
Good
Fine
Moderate
Poor
Very poor
Hazardous
39.86 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
174.81 μg/m³
0
55
155
255
425
605+
15.37 ppb
0
55
71
86
201
201+
1.25 ppb
0
36
76
186
605
1005+
14.76 ppb
0
54
101
361
1250
2050+
0.34 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Low
Joliet, Illinois
Joliet, Illinois
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AQI 110
Unhealthy for sensitive groups
39.04μg/m³
PM2.5
171.88μg/m³
PM10
8.71ppb
O3
1.24ppb
SO2
13.44ppb
NO2
0.29ppm
CO
AQI 110
Unhealthy for sensitive groups
38.59μg/m³
PM2.5
163.10μg/m³
PM10
9.77ppb
O3
1.26ppb
SO2
13.98ppb
NO2
0.30ppm
CO
AQI 107
Unhealthy for sensitive groups
38.31μg/m³
PM2.5
164.32μg/m³
PM10
8.88ppb
O3
1.34ppb
SO2
14.96ppb
NO2
0.33ppm
CO
AQI 115
Unhealthy for sensitive groups
41.24μg/m³
PM2.5
176.78μg/m³
PM10
11.82ppb
O3
1.05ppb
SO2
13.36ppb
NO2
0.28ppm
CO
AQI 110
Unhealthy for sensitive groups
38.55μg/m³
PM2.5
161.14μg/m³
PM10
10.07ppb
O3
1.25ppb
SO2
14.11ppb
NO2
0.30ppm
CO
AQI 107
Unhealthy for sensitive groups
38.18μg/m³
PM2.5
163.19μg/m³
PM10
8.81ppb
O3
1.24ppb
SO2
13.37ppb
NO2
0.33ppm
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 Joliet, Illinois is updated every hour for accuracy.
In the past 24 hours, the air quality in Joliet, Illinois was at its worst at 12:00:00 on 2025-07-14.
In the last 24 hours, the best air quality in Joliet, Illinois was observed at 07:00:00 on 2025-07-13.
As of now, the AQI in Joliet, Illinois is 112, indicating Unhealthy for Sensitive Groups conditions.
Joliet, Illinois air has the highest levels of PM2.5.
Poor air quality in Joliet, Illinois means it's advisable to stay indoors and wear a mask for your protection.
PM2.5 levels in Joliet, Illinois are currently 39.921 μg/m3.
The PM10 concentration in Joliet, Illinois is 173.133 μg/m3 at the moment.
The current carbon monoxide (CO) concentration in Joliet, Illinois is 0.335 ppm.
Currently, Joliet, Illinois has a sulfur dioxide (SO2) concentration of 0.911 ppb.
The current ozone (O3) level in Joliet, Illinois at the moment is 9.216 ppm.
Nitrogen dioxide (NO2) level in Joliet, Illinois at the moment is 13.905 ppb.
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