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)
33
Good
Joliet, Illinois
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
6.07 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
26.85 μg/m³
0
55
155
255
425
605+
18.31 ppb
0
55
71
86
201
201+
1.07 ppb
0
36
76
186
605
1005+
14.71 ppb
0
54
101
361
1250
2050+
0.25 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Low
Joliet, Illinois
Joliet, Illinois
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AQI 33
Good
6.05μg/m³
PM2.5
26.79μg/m³
PM10
18.40ppb
O3
1.07ppb
SO2
14.73ppb
NO2
0.25ppm
CO
AQI 33
Good
5.72μg/m³
PM2.5
25.21μg/m³
PM10
19.60ppb
O3
1.07ppb
SO2
15.86ppb
NO2
0.25ppm
CO
AQI 27
Good
5.24μg/m³
PM2.5
20.28μg/m³
PM10
9.92ppb
O3
1.15ppb
SO2
14.46ppb
NO2
0.26ppm
CO
AQI 27
Good
5.48μg/m³
PM2.5
20.95μg/m³
PM10
19.26ppb
O3
1.02ppb
SO2
15.23ppb
NO2
0.25ppm
CO
AQI 33
Good
5.94μg/m³
PM2.5
28.45μg/m³
PM10
17.76ppb
O3
1.10ppb
SO2
16.11ppb
NO2
0.26ppm
CO
AQI 33
Good
5.73μg/m³
PM2.5
28.01μg/m³
PM10
9.97ppb
O3
1.15ppb
SO2
14.56ppb
NO2
0.25ppm
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 02:00:00 on 2025-12-07.
In the last 24 hours, the best air quality in Joliet, Illinois was observed at 03:00:00 on 2025-12-08.
As of now, the AQI in Joliet, Illinois is 33, indicating Good 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 6.067 μg/m3.
The PM10 concentration in Joliet, Illinois is 26.847 μg/m3 at the moment.
The current carbon monoxide (CO) concentration in Joliet, Illinois is 0.25 ppm.
Currently, Joliet, Illinois has a sulfur dioxide (SO2) concentration of 1.073 ppb.
The current ozone (O3) level in Joliet, Illinois at the moment is 18.313 ppm.
Nitrogen dioxide (NO2) level in Joliet, Illinois at the moment is 14.712 ppb.
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