Air quality in Charleston
The US Air Quality Index (EPA) grades air from 0 to 500 using fine particles (PM2.5/PM10), ozone and nitrogen dioxide. 0-50 is Good, 51-100 Moderate, 101-150 Unhealthy for Sensitive Groups, and anything higher affects everyone.
PM2.5
9 µg/m³
WHO guideline 15
PM10
9.1 µg/m³
WHO guideline 45
Hour by hour (12h)
US EPA AQI
10:00 PM
💨
PM2.5 9 µg/m³
38Good
11:00 PM
💨
PM2.5 9.9 µg/m³
41Good
12:00 AM
💨
PM2.5 10.7 µg/m³
45Good
1:00 AM
💨
PM2.5 11.1 µg/m³
46Good
2:00 AM
💨
PM2.5 11 µg/m³
46Good
3:00 AM
💨
PM2.5 10.7 µg/m³
45Good
4:00 AM
💨
PM2.5 10.7 µg/m³
45Good
5:00 AM
💨
PM2.5 11.1 µg/m³
46Good
6:00 AM
💨
PM2.5 12.3 µg/m³
51Moderate
7:00 AM
💨
PM2.5 14.3 µg/m³
56Moderate
8:00 AM
💨
PM2.5 15.3 µg/m³
58Moderate
9:00 AM
💨
PM2.5 14.8 µg/m³
57Moderate
Next few days
daily max · US EPA AQI
Sun
💨
Moderate · UV High
95
Mon
💨
Moderate · UV High
61
Tue
💨
Moderate · UV High
55
Wed
💨
Moderate · UV High
83
Thu
💨
Moderate · UV High
85