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)
64
Moderate
Charleston, Illinois
Last updated: ... (Local time)
Good
Fine
Moderate
Poor
Very poor
Hazardous
16.14 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
62.82 μg/m³
0
55
155
255
425
605+
20.90 ppb
0
55
71
86
201
201+
1.30 ppb
0
36
76
186
605
1005+
3.96 ppb
0
54
101
361
1250
2050+
0.25 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
High
Charleston, Illinois
Charleston, Illinois
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AQI 42
Good
5.39μg/m³
PM2.5
34.47μg/m³
PM10
44.78ppb
O3
1.22ppb
SO2
5.18ppb
NO2
0.16ppm
CO
AQI 38
Good
5.79μg/m³
PM2.5
31.19μg/m³
PM10
41.06ppb
O3
1.23ppb
SO2
5.11ppb
NO2
0.18ppm
CO
AQI 62
Moderate
15.39μg/m³
PM2.5
67.74μg/m³
PM10
41.04ppb
O3
0.90ppb
SO2
5.17ppb
NO2
0.17ppm
CO
AQI 42
Good
5.02μg/m³
PM2.5
22.29μg/m³
PM10
45.27ppb
O3
1.21ppb
SO2
5.39ppb
NO2
0.13ppm
CO
AQI 42
Good
5.00μg/m³
PM2.5
22.03μg/m³
PM10
45.15ppb
O3
1.21ppb
SO2
5.41ppb
NO2
0.13ppm
CO
AQI 42
Good
6.78μg/m³
PM2.5
29.91μg/m³
PM10
44.99ppb
O3
1.13ppb
SO2
4.42ppb
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 03:00:00, 2025-09-04.
The best air quality in Charleston, Illinois was observed at 01:00:00 on 2025-09-04.
The air quality in Charleston, Illinois right now is Moderate, with an AQI of 64.
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 16.136 μg/m3.
Charleston, Illinois currently has a PM10 concentration of 62.819 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 1.302 ppb.
Charleston, Illinois currently has an ozone (O3) concentration of 20.899 ppm.
The current level of nitrogen dioxide (NO2) in Charleston, Illinois is 3.965 ppb.
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