Stay updated with real-time air quality in Charleston, 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)
54
Moderate
Charleston, Illinois
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
10.95 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
36.69 μg/m³
0
55
155
255
425
605+
24.01 ppb
0
55
71
86
201
201+
0.43 ppb
0
36
76
186
605
1005+
4.27 ppb
0
54
101
361
1250
2050+
0.25 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Low
Charleston, Illinois
Charleston, Illinois
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AQI 54
Moderate
11.15μg/m³
PM2.5
47.36μg/m³
PM10
24.40ppb
O3
0.46ppb
SO2
4.76ppb
NO2
0.17ppm
CO
AQI 49
Good
9.31μg/m³
PM2.5
25.39μg/m³
PM10
31.87ppb
O3
0.50ppb
SO2
4.04ppb
NO2
0.19ppm
CO
AQI 44
Good
8.08μg/m³
PM2.5
30.79μg/m³
PM10
23.09ppb
O3
0.58ppb
SO2
5.43ppb
NO2
0.21ppm
CO
AQI 58
Moderate
12.51μg/m³
PM2.5
55.40μg/m³
PM10
27.00ppb
O3
0.37ppb
SO2
5.48ppb
NO2
0.13ppm
CO
AQI 58
Moderate
12.68μg/m³
PM2.5
56.84μg/m³
PM10
27.69ppb
O3
0.37ppb
SO2
5.55ppb
NO2
0.13ppm
CO
AQI 60
Moderate
13.86μg/m³
PM2.5
62.83μg/m³
PM10
29.92ppb
O3
0.36ppb
SO2
4.19ppb
NO2
0.14ppm
CO
The air quality data for Illinois, USA is gathered from reliable sources such as satellites and monitoring stations, adhering to US EPA guidelines. With the help of advanced algorithms and machine learning, factors like traffic and population density are analyzed to deliver accurate and dependable results.
Source: Ambee Data Sources
Air quality updates for Charleston, Illinois are available every hour.
Charleston, Illinois experienced its worst air quality at 02:00:00, 2026-06-08.
The best air quality in Charleston, Illinois was observed at 08:00:00 on 2026-06-08.
The air quality in Charleston, Illinois right now is Moderate, with an AQI of 54.
In Charleston, Illinois, PM2.5 is the most frequently found pollutant.
When air quality in Charleston, Illinois is compromised, staying indoors and wearing a mask can reduce health risks.
Charleston, Illinois currently has a PM2.5 concentration of 10.949 μg/m3.
Charleston, Illinois currently has a PM10 concentration of 36.692 μg/m3.
The current carbon monoxide (CO) level in Charleston, Illinois is 0.253 ppm.
The current sulfur dioxide (SO2) concentration in Charleston, Illinois is 0.432 ppb.
Charleston, Illinois currently has an ozone (O3) concentration of 24.011 ppm.
The current level of nitrogen dioxide (NO2) in Charleston, Illinois is 4.273 ppb.
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