Stay updated with real-time air quality in Charleston, South Carolina 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)
66
Moderate
Charleston, South Carolina
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
17.35 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
41.25 μg/m³
0
55
155
255
425
605+
53.53 ppb
0
55
71
86
201
201+
1.07 ppb
0
36
76
186
605
1005+
3.31 ppb
0
54
101
361
1250
2050+
0.22 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Charleston, South Carolina
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AQI 66
Moderate
17.00μg/m³
PM2.5
43.12μg/m³
PM10
53.64ppb
O3
1.06ppb
SO2
3.42ppb
NO2
0.22ppm
CO
AQI 62
Moderate
14.69μg/m³
PM2.5
28.64μg/m³
PM10
55.89ppb
O3
1.02ppb
SO2
3.37ppb
NO2
0.22ppm
CO
AQI 66
Moderate
17.21μg/m³
PM2.5
40.25μg/m³
PM10
54.32ppb
O3
1.08ppb
SO2
3.19ppb
NO2
0.22ppm
CO
AQI 66
Moderate
16.86μg/m³
PM2.5
40.70μg/m³
PM10
54.91ppb
O3
1.08ppb
SO2
3.32ppb
NO2
0.22ppm
CO
AQI 62
Moderate
15.13μg/m³
PM2.5
37.26μg/m³
PM10
57.34ppb
O3
1.04ppb
SO2
3.46ppb
NO2
0.22ppm
CO
AQI 67
Moderate
14.13μg/m³
PM2.5
19.99μg/m³
PM10
60.42ppb
O3
1.01ppb
SO2
3.66ppb
NO2
0.22ppm
CO
Air quality data and pollutant measurements for South Carolina, USA adhere to strict US EPA standards. The data is collected from multiple reliable sources, including satellites and ground-based monitoring stations. This data is further analyzed and enhanced using machine learning and advanced algorithms that factor in elements such as traffic and population density, ensuring accurate and reliable results.
Source: Ambee Data Sources
The air quality for Charleston, South Carolina is updated every hour.
The worst air quality in Charleston, South Carolina in the last 24 hours was observed at 10:00:00 on 2026-04-23.
In the last 24 hrs, the best air quality in Charleston, South Carolina was observed at 08:00:00 on 2026-04-23.
The current air quality in Charleston, South Carolina is 66, categorized as Moderate based on real-time data.
The most common pollutant in Charleston, South Carolina is PM2.5.
If the air quality in Charleston, South Carolina is poor, consider staying indoors and wearing a mask to protect yourself.
The current PM2.5 concentration at Charleston, South Carolina is 17.353 μg/m3.
The current PM10 concentration at Charleston, South Carolina is 41.253 μg/m3.
The current carbon monoxide (CO) concentration at Charleston, South Carolina is 0.218 ppm.
The current sulfur dioxide (SO2) concentration at Charleston, South Carolina is 1.067 ppb.
The current ozone (O3) concentration at Charleston, South Carolina is 53.534 ppm.
The current nitrogen dioxide (NO2) concentration at Charleston, South Carolina is 3.313 ppb.
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