Stay updated with real-time air quality in Chatham, 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)
49
Good
Chatham, Illinois
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
7.40 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
31.92 μg/m³
0
55
155
255
425
605+
53.41 ppb
0
55
71
86
201
201+
1.18 ppb
0
36
76
186
605
1005+
3.24 ppb
0
54
101
361
1250
2050+
0.18 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
High
Chatham, Illinois
Chatham, Illinois
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AQI 46
Good
7.20μg/m³
PM2.5
32.03μg/m³
PM10
50.03ppb
O3
0.93ppb
SO2
3.28ppb
NO2
0.18ppm
CO
AQI 51
Moderate
7.67μg/m³
PM2.5
36.61μg/m³
PM10
54.92ppb
O3
1.27ppb
SO2
3.90ppb
NO2
0.17ppm
CO
AQI 47
Good
7.97μg/m³
PM2.5
33.58μg/m³
PM10
51.08ppb
O3
1.46ppb
SO2
3.03ppb
NO2
0.18ppm
CO
AQI 49
Good
8.08μg/m³
PM2.5
38.16μg/m³
PM10
52.77ppb
O3
0.92ppb
SO2
3.23ppb
NO2
0.17ppm
CO
AQI 54
Moderate
7.49μg/m³
PM2.5
32.97μg/m³
PM10
56.03ppb
O3
0.89ppb
SO2
3.25ppb
NO2
0.15ppm
CO
AQI 61
Moderate
7.97μg/m³
PM2.5
33.50μg/m³
PM10
57.51ppb
O3
1.87ppb
SO2
4.17ppb
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 Chatham, Illinois is updated every hour for accuracy.
In the past 24 hours, the air quality in Chatham, Illinois was at its worst at 05:00:00 on 2026-10-22.
In the last 24 hours, the best air quality in Chatham, Illinois was observed at 12:00:00 on 2026-10-22.
As of now, the AQI in Chatham, Illinois is 49, indicating Good conditions.
Chatham, Illinois air has the highest levels of O3.
Poor air quality in Chatham, Illinois means it's advisable to stay indoors and wear a mask for your protection.
PM2.5 levels in Chatham, Illinois are currently 7.4 μg/m3.
The PM10 concentration in Chatham, Illinois is 31.918 μg/m3 at the moment.
The current carbon monoxide (CO) concentration in Chatham, Illinois is 0.178 ppm.
Currently, Chatham, Illinois has a sulfur dioxide (SO2) concentration of 1.175 ppb.
The current ozone (O3) level in Chatham, Illinois at the moment is 53.409 ppm.
Nitrogen dioxide (NO2) level in Chatham, Illinois at the moment is 3.242 ppb.
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