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)
38
Good
Joliet, Illinois
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
7.07 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
31.77 μg/m³
0
55
155
255
425
605+
29.71 ppb
0
55
71
86
201
201+
0.92 ppb
0
36
76
186
605
1005+
4.43 ppb
0
54
101
361
1250
2050+
0.20 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Low
Joliet, Illinois
Joliet, Illinois
Scroll To Air Quality MapLoading...
AQI 38
Good
7.06μg/m³
PM2.5
31.71μg/m³
PM10
29.74ppb
O3
0.92ppb
SO2
4.43ppb
NO2
0.20ppm
CO
AQI 38
Good
6.83μg/m³
PM2.5
30.06μg/m³
PM10
31.10ppb
O3
0.95ppb
SO2
4.51ppb
NO2
0.20ppm
CO
AQI 38
Good
7.26μg/m³
PM2.5
28.11μg/m³
PM10
28.00ppb
O3
1.09ppb
SO2
6.67ppb
NO2
0.20ppm
CO
AQI 38
Good
7.19μg/m³
PM2.5
30.76μg/m³
PM10
29.71ppb
O3
0.84ppb
SO2
4.39ppb
NO2
0.20ppm
CO
AQI 38
Good
6.75μg/m³
PM2.5
29.47μg/m³
PM10
31.48ppb
O3
0.95ppb
SO2
4.55ppb
NO2
0.21ppm
CO
AQI 38
Good
7.00μg/m³
PM2.5
30.74μg/m³
PM10
28.92ppb
O3
1.01ppb
SO2
6.74ppb
NO2
0.20ppm
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 10:00:00 on 2026-08-18.
In the last 24 hours, the best air quality in Joliet, Illinois was observed at 01:00:00 on 2026-08-18.
As of now, the AQI in Joliet, Illinois is 38, 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 7.066 μg/m3.
The PM10 concentration in Joliet, Illinois is 31.769 μg/m3 at the moment.
The current carbon monoxide (CO) concentration in Joliet, Illinois is 0.202 ppm.
Currently, Joliet, Illinois has a sulfur dioxide (SO2) concentration of 0.918 ppb.
The current ozone (O3) level in Joliet, Illinois at the moment is 29.711 ppm.
Nitrogen dioxide (NO2) level in Joliet, Illinois at the moment is 4.427 ppb.
All Rights Reserved © Ambee Inc. 2025