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)
77
Moderate
Joliet, Illinois
Last updated: ... (Local time)
Good
Fine
Moderate
Poor
Very poor
Hazardous
23.04 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
101.03 μg/m³
0
55
155
255
425
605+
20.39 ppb
0
55
71
86
201
201+
0.39 ppb
0
36
76
186
605
1005+
4.00 ppb
0
54
101
361
1250
2050+
0.21 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Low
Joliet, Illinois
Joliet, Illinois
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AQI 77
Moderate
23.22μg/m³
PM2.5
101.63μg/m³
PM10
20.41ppb
O3
0.39ppb
SO2
4.00ppb
NO2
0.21ppm
CO
AQI 84
Moderate
27.22μg/m³
PM2.5
112.52μg/m³
PM10
19.80ppb
O3
0.38ppb
SO2
4.02ppb
NO2
0.21ppm
CO
AQI 97
Moderate
28.65μg/m³
PM2.5
147.19μg/m³
PM10
23.11ppb
O3
0.38ppb
SO2
4.01ppb
NO2
0.21ppm
CO
AQI 99
Moderate
35.14μg/m³
PM2.5
113.72μg/m³
PM10
21.08ppb
O3
0.41ppb
SO2
3.99ppb
NO2
0.21ppm
CO
AQI 88
Moderate
29.15μg/m³
PM2.5
118.81μg/m³
PM10
19.88ppb
O3
0.37ppb
SO2
4.04ppb
NO2
0.21ppm
CO
AQI 84
Moderate
26.55μg/m³
PM2.5
107.56μg/m³
PM10
18.55ppb
O3
0.47ppb
SO2
4.03ppb
NO2
0.21ppm
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 09:00:00 on 2025-07-21.
In the last 24 hours, the best air quality in Joliet, Illinois was observed at 12:00:00 on 2025-07-20.
As of now, the AQI in Joliet, Illinois is 77, indicating Moderate 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 23.044 μg/m3.
The PM10 concentration in Joliet, Illinois is 101.031 μg/m3 at the moment.
The current carbon monoxide (CO) concentration in Joliet, Illinois is 0.208 ppm.
Currently, Joliet, Illinois has a sulfur dioxide (SO2) concentration of 0.393 ppb.
The current ozone (O3) level in Joliet, Illinois at the moment is 20.395 ppm.
Nitrogen dioxide (NO2) level in Joliet, Illinois at the moment is 4 ppb.
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