Air quality in Fairfax
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
7.6 µg/m³
WHO guideline 15
PM10
7.7 µg/m³
WHO guideline 45
Hour by hour (12h)
US EPA AQI
8:00 PM
💨
PM2.5 7.6 µg/m³
47Good
9:00 PM
💨
PM2.5 7.1 µg/m³
45Good
10:00 PM
💨
PM2.5 6.3 µg/m³
43Good
11:00 PM
💨
PM2.5 6.3 µg/m³
42Good
12:00 AM
💨
PM2.5 6.2 µg/m³
39Good
1:00 AM
💨
PM2.5 6.5 µg/m³
37Good
2:00 AM
💨
PM2.5 7.2 µg/m³
34Good
3:00 AM
💨
PM2.5 7.3 µg/m³
33Good
4:00 AM
💨
PM2.5 7 µg/m³
32Good
5:00 AM
💨
PM2.5 7.1 µg/m³
31Good
6:00 AM
💨
PM2.5 7.5 µg/m³
31Good
7:00 AM
💨
PM2.5 8 µg/m³
33Good
Next few days
daily max · US EPA AQI
Thu
💨
Moderate · UV Moderate
70
Sun
💨
Good · UV Very high
37
Mon
💨
Good · UV Very high
29