Air quality in Charles Town
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
7.3 µg/m³
WHO guideline 15
PM10
7.3 µg/m³
WHO guideline 45
Hour by hour (12h)
US EPA AQI
11:00 PM
💨
PM2.5 7.3 µg/m³
30Good
12:00 AM
💨
PM2.5 7.9 µg/m³
33Good
1:00 AM
💨
PM2.5 8.6 µg/m³
36Good
2:00 AM
💨
PM2.5 9.3 µg/m³
39Good
3:00 AM
💨
PM2.5 10 µg/m³
42Good
4:00 AM
💨
PM2.5 11.2 µg/m³
47Good
5:00 AM
💨
PM2.5 12.4 µg/m³
52Moderate
6:00 AM
💨
PM2.5 13.4 µg/m³
54Moderate
7:00 AM
💨
PM2.5 14.7 µg/m³
56Moderate
8:00 AM
💨
PM2.5 16.1 µg/m³
59Moderate
9:00 AM
💨
PM2.5 10 µg/m³
42Good
10:00 AM
💨
PM2.5 7.5 µg/m³
38Good
Next few days
daily max · US EPA AQI
Wed
💨
Moderate · UV High
63
Thu
💨
Moderate · UV High
68
Fri
💨
Moderate · UV High
66
Sat
💨
Moderate · UV High
53