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
8.98 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
38.34 μg/m³
0
55
155
255
425
605+
14.29 ppb
0
55
71
86
201
201+
0.62 ppb
0
36
76
186
605
1005+
3.64 ppb
0
54
101
361
1250
2050+
0.39 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Low
Chatham, Illinois
Chatham, Illinois
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AQI 22
Good
3.51μg/m³
PM2.5
16.03μg/m³
PM10
16.91ppb
O3
0.53ppb
SO2
3.62ppb
NO2
0.28ppm
CO
AQI 22
Good
3.54μg/m³
PM2.5
17.06μg/m³
PM10
16.84ppb
O3
0.57ppb
SO2
10.84ppb
NO2
0.28ppm
CO
AQI 22
Good
4.20μg/m³
PM2.5
18.23μg/m³
PM10
20.52ppb
O3
0.37ppb
SO2
2.61ppb
NO2
0.17ppm
CO
AQI 23
Good
3.40μg/m³
PM2.5
16.89μg/m³
PM10
24.50ppb
O3
0.54ppb
SO2
3.78ppb
NO2
0.25ppm
CO
AQI 22
Good
3.99μg/m³
PM2.5
17.94μg/m³
PM10
17.13ppb
O3
0.69ppb
SO2
11.10ppb
NO2
0.23ppm
CO
AQI 69
Moderate
19.02μg/m³
PM2.5
76.73μg/m³
PM10
15.17ppb
O3
0.76ppb
SO2
14.05ppb
NO2
0.34ppm
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 02:00:00 on 2026-01-23.
In the last 24 hours, the best air quality in Chatham, Illinois was observed at 09:00:00 on 2026-01-22.
As of now, the AQI in Chatham, Illinois is 49, indicating Good conditions.
Chatham, Illinois air has the highest levels of PM2.5.
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 8.984 μg/m3.
The PM10 concentration in Chatham, Illinois is 38.335 μg/m3 at the moment.
The current carbon monoxide (CO) concentration in Chatham, Illinois is 0.389 ppm.
Currently, Chatham, Illinois has a sulfur dioxide (SO2) concentration of 0.623 ppb.
The current ozone (O3) level in Chatham, Illinois at the moment is 14.291 ppm.
Nitrogen dioxide (NO2) level in Chatham, Illinois at the moment is 3.637 ppb.
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