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)
56
Moderate
Charleston, Illinois
Last updated: ... (Local time)
Good
Fine
Moderate
Poor
Very poor
Hazardous
12.21 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
47.99 μg/m³
0
55
155
255
425
605+
33.88 ppb
0
55
71
86
201
201+
0.55 ppb
0
36
76
186
605
1005+
5.12 ppb
0
54
101
361
1250
2050+
0.41 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Low
Charleston, Illinois
Charleston, Illinois
Scroll To Air Quality MapLoading...
AQI 56
Moderate
12.38μg/m³
PM2.5
50.23μg/m³
PM10
31.25ppb
O3
0.57ppb
SO2
2.92ppb
NO2
0.42ppm
CO
AQI 56
Moderate
12.22μg/m³
PM2.5
47.30μg/m³
PM10
13.37ppb
O3
0.48ppb
SO2
3.14ppb
NO2
0.43ppm
CO
AQI 44
Good
8.22μg/m³
PM2.5
36.34μg/m³
PM10
34.05ppb
O3
0.30ppb
SO2
5.63ppb
NO2
0.31ppm
CO
AQI 52
Moderate
9.54μg/m³
PM2.5
39.96μg/m³
PM10
35.10ppb
O3
0.79ppb
SO2
5.08ppb
NO2
0.40ppm
CO
AQI 49
Good
8.51μg/m³
PM2.5
37.28μg/m³
PM10
35.24ppb
O3
0.78ppb
SO2
5.07ppb
NO2
0.40ppm
CO
AQI 34
Good
5.71μg/m³
PM2.5
25.06μg/m³
PM10
37.03ppb
O3
0.68ppb
SO2
3.06ppb
NO2
0.47ppm
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 10:00:00, 2025-06-04.
The best air quality in Charleston, Illinois was observed at 02:00:00 on 2025-06-04.
The air quality in Charleston, Illinois right now is Moderate, with an AQI of 56.
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 12.207 μg/m3.
Charleston, Illinois currently has a PM10 concentration of 47.993 μg/m3.
The current carbon monoxide (CO) level in Charleston, Illinois is 0.41 ppm.
The current sulfur dioxide (SO2) concentration in Charleston, Illinois is 0.549 ppb.
Charleston, Illinois currently has an ozone (O3) concentration of 33.878 ppm.
The current level of nitrogen dioxide (NO2) in Charleston, Illinois is 5.12 ppb.
All Rights Reserved © Ambee Inc. 2025