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
5.5 µg/m³
WHO guideline 15
PM10
5.7 µg/m³
WHO guideline 45
Hour by hour (12h)
US EPA AQI
6:00 AM
💨
PM2.5 5.5 µg/m³
23Good
7:00 AM
💨
PM2.5 5.2 µg/m³
22Good
8:00 AM
💨
PM2.5 5.2 µg/m³
22Good
9:00 AM
💨
PM2.5 5.3 µg/m³
22Good
10:00 AM
💨
PM2.5 6.5 µg/m³
27Good
11:00 AM
💨
PM2.5 8.8 µg/m³
37Good
12:00 PM
💨
PM2.5 8.1 µg/m³
42Good
1:00 PM
💨
PM2.5 8.6 µg/m³
49Good
2:00 PM
💨
PM2.5 8.8 µg/m³
56Moderate
3:00 PM
💨
PM2.5 9.2 µg/m³
58Moderate
4:00 PM
💨
PM2.5 9.3 µg/m³
55Moderate
5:00 PM
💨
PM2.5 9.4 µg/m³
48Good
Next few days
daily max · US EPA AQI
Thu
💨
Moderate · UV High
58
Fri
💨
Moderate · UV High
58