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
3.8 µg/m³
WHO guideline 15
PM10
5.9 µg/m³
WHO guideline 45
Hour by hour (12h)
US EPA AQI
9:00 AM
💨
PM2.5 3.8 µg/m³
18Good
10:00 AM
💨
PM2.5 4.2 µg/m³
21Good
11:00 AM
💨
PM2.5 4.6 µg/m³
23Good
12:00 PM
💨
PM2.5 5 µg/m³
24Good
1:00 PM
💨
PM2.5 5.7 µg/m³
25Good
2:00 PM
💨
PM2.5 6.3 µg/m³
26Good
3:00 PM
💨
PM2.5 6.9 µg/m³
29Good
4:00 PM
💨
PM2.5 7.1 µg/m³
30Good
5:00 PM
💨
PM2.5 7.3 µg/m³
30Good
6:00 PM
💨
PM2.5 7.5 µg/m³
31Good
7:00 PM
💨
PM2.5 7.7 µg/m³
32Good
8:00 PM
💨
PM2.5 7.6 µg/m³
32Good
Next few days
daily max · US EPA AQI
Thu
💨
Good · UV Very high
32
Sun
💨
Good · UV Moderate
42
Mon
💨
Good · UV Moderate
37