Air quality in Bull Run
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
3.3 µg/m³
WHO guideline 15
PM10
3.3 µg/m³
WHO guideline 45
Hour by hour (12h)
US EPA AQI
12:00 PM
💨
PM2.5 3.3 µg/m³
44Good
1:00 PM
💨
PM2.5 3.6 µg/m³
43Good
2:00 PM
💨
PM2.5 3.7 µg/m³
43Good
3:00 PM
💨
PM2.5 3.7 µg/m³
43Good
4:00 PM
💨
PM2.5 3.6 µg/m³
42Good
5:00 PM
💨
PM2.5 3.5 µg/m³
41Good
6:00 PM
💨
PM2.5 3.4 µg/m³
38Good
7:00 PM
💨
PM2.5 3.4 µg/m³
34Good
8:00 PM
💨
PM2.5 4.1 µg/m³
31Good
9:00 PM
💨
PM2.5 4.5 µg/m³
29Good
10:00 PM
💨
PM2.5 4.3 µg/m³
28Good
11:00 PM
💨
PM2.5 4.3 µg/m³
26Good
Next few days
daily max · US EPA AQI
Tue
💨
Moderate · UV Very high
64
Wed
💨
Unhealthy for Sensitive Groups · UV High
106
Thu
💨
Good · UV Very high
43