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)
29
Good
Joliet, Illinois
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
3.04 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
12.21 μg/m³
0
55
155
255
425
605+
31.26 ppb
0
55
71
86
201
201+
0.73 ppb
0
36
76
186
605
1005+
7.47 ppb
0
54
101
361
1250
2050+
0.14 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Low
Joliet, Illinois
Joliet, Illinois
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AQI 29
Good
3.04μg/m³
PM2.5
12.24μg/m³
PM10
31.27ppb
O3
0.73ppb
SO2
7.45ppb
NO2
0.14ppm
CO
AQI 29
Good
3.27μg/m³
PM2.5
13.65μg/m³
PM10
31.32ppb
O3
0.73ppb
SO2
7.26ppb
NO2
0.14ppm
CO
AQI 29
Good
4.42μg/m³
PM2.5
20.57μg/m³
PM10
31.32ppb
O3
0.70ppb
SO2
7.81ppb
NO2
0.14ppm
CO
AQI 30
Good
3.54μg/m³
PM2.5
15.34μg/m³
PM10
32.34ppb
O3
0.76ppb
SO2
5.08ppb
NO2
0.14ppm
CO
AQI 31
Good
3.53μg/m³
PM2.5
14.04μg/m³
PM10
33.49ppb
O3
0.72ppb
SO2
7.84ppb
NO2
0.14ppm
CO
AQI 29
Good
4.30μg/m³
PM2.5
18.22μg/m³
PM10
31.38ppb
O3
0.72ppb
SO2
7.45ppb
NO2
0.14ppm
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 03:00:00 on 2026-01-23.
In the last 24 hours, the best air quality in Joliet, Illinois was observed at 03:00:00 on 2026-01-22.
As of now, the AQI in Joliet, Illinois is 29, indicating Good conditions.
Joliet, Illinois air has the highest levels of O3.
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 3.037 μg/m3.
The PM10 concentration in Joliet, Illinois is 12.205 μg/m3 at the moment.
The current carbon monoxide (CO) concentration in Joliet, Illinois is 0.14 ppm.
Currently, Joliet, Illinois has a sulfur dioxide (SO2) concentration of 0.735 ppb.
The current ozone (O3) level in Joliet, Illinois at the moment is 31.262 ppm.
Nitrogen dioxide (NO2) level in Joliet, Illinois at the moment is 7.47 ppb.
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