Air quality in Roanoke
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
9.6 µg/m³
WHO guideline 15
PM10
10.4 µg/m³
WHO guideline 45
Hour by hour (12h)
US EPA AQI
5:00 PM
💨
PM2.5 9.6 µg/m³
65Moderate
6:00 PM
💨
PM2.5 9.7 µg/m³
53Moderate
7:00 PM
💨
PM2.5 12.4 µg/m³
52Moderate
8:00 PM
💨
PM2.5 15.3 µg/m³
58Moderate
9:00 PM
💨
PM2.5 17.2 µg/m³
62Moderate
10:00 PM
💨
PM2.5 18 µg/m³
63Moderate
11:00 PM
💨
PM2.5 19 µg/m³
66Moderate
12:00 AM
💨
PM2.5 18.3 µg/m³
64Moderate
1:00 AM
💨
PM2.5 15.7 µg/m³
59Moderate
2:00 AM
💨
PM2.5 14 µg/m³
55Moderate
3:00 AM
💨
PM2.5 13.6 µg/m³
54Moderate
4:00 AM
💨
PM2.5 13.6 µg/m³
54Moderate
Next few days
daily max · US EPA AQI
Mon
💨
Moderate · UV Very high
75
Tue
💨
Unhealthy for Sensitive Groups · UV Very high
111
Wed
💨
Moderate · UV Very high
100
Thu
💨
Moderate · UV High
95