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
3.3 µg/m³
WHO guideline 15
PM10
3.9 µg/m³
WHO guideline 45
Hour by hour (12h)
US EPA AQI
12:00 AM
💨
PM2.5 3.3 µg/m³
23Good
1:00 AM
💨
PM2.5 3.6 µg/m³
22Good
2:00 AM
💨
PM2.5 3.9 µg/m³
21Good
3:00 AM
💨
PM2.5 4.1 µg/m³
18Good
4:00 AM
💨
PM2.5 4.2 µg/m³
18Good
5:00 AM
💨
PM2.5 4.2 µg/m³
18Good
6:00 AM
💨
PM2.5 4 µg/m³
17Good
7:00 AM
💨
PM2.5 4 µg/m³
17Good
8:00 AM
💨
PM2.5 3.8 µg/m³
18Good
9:00 AM
💨
PM2.5 3.5 µg/m³
24Good
10:00 AM
💨
PM2.5 3.6 µg/m³
31Good
11:00 AM
💨
PM2.5 4 µg/m³
37Good
Next few days
daily max · US EPA AQI
Tue
💨
Good · UV Very high
50
Wed
💨
Moderate · UV Very high
60
Thu
💨
Good · UV Very high
32
Fri
💨
Good · UV Very high
29
Sat
💨
Good · UV Very high
26