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
8.7 µg/m³
WHO guideline 15
PM10
10.1 µg/m³
WHO guideline 45
Hour by hour (12h)
US EPA AQI
5:00 AM
💨
PM2.5 8.7 µg/m³
36Good
6:00 AM
💨
PM2.5 8.7 µg/m³
36Good
7:00 AM
💨
PM2.5 8.8 µg/m³
37Good
8:00 AM
💨
PM2.5 9 µg/m³
38Good
9:00 AM
💨
PM2.5 9.5 µg/m³
41Good
10:00 AM
💨
PM2.5 9.8 µg/m³
45Good
11:00 AM
💨
PM2.5 9.6 µg/m³
49Good
12:00 PM
💨
PM2.5 8.7 µg/m³
53Moderate
1:00 PM
💨
PM2.5 7.9 µg/m³
61Moderate
2:00 PM
💨
PM2.5 7.6 µg/m³
66Moderate
3:00 PM
💨
PM2.5 7.4 µg/m³
70Moderate
4:00 PM
💨
PM2.5 7.2 µg/m³
71Moderate
Next few days
daily max · US EPA AQI
Mon
💨
Moderate · UV Very high
71
Tue
💨
Moderate · UV Very high
81
Wed
💨
Unhealthy for Sensitive Groups · UV High
106
Thu
💨
Unhealthy for Sensitive Groups · UV Very high
145
Fri
💨
Good · UV Very high
50