Air quality in Reston
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
6.5 µg/m³
WHO guideline 15
PM10
6.5 µg/m³
WHO guideline 45
Hour by hour (12h)
US EPA AQI
9:00 AM
💨
PM2.5 6.5 µg/m³
33Good
10:00 AM
💨
PM2.5 5.1 µg/m³
45Good
11:00 AM
💨
PM2.5 3.9 µg/m³
65Moderate
12:00 PM
💨
PM2.5 3.9 µg/m³
78Moderate
1:00 PM
💨
PM2.5 4.4 µg/m³
81Moderate
2:00 PM
💨
PM2.5 4.9 µg/m³
81Moderate
3:00 PM
💨
PM2.5 5.3 µg/m³
83Moderate
4:00 PM
💨
PM2.5 5.7 µg/m³
81Moderate
5:00 PM
💨
PM2.5 6.1 µg/m³
73Moderate
6:00 PM
💨
PM2.5 6.6 µg/m³
56Moderate
7:00 PM
💨
PM2.5 8.2 µg/m³
46Good
8:00 PM
💨
PM2.5 10.8 µg/m³
45Good
Next few days
daily max · US EPA AQI
Wed
💨
Moderate · UV Very high
83
Thu
💨
Moderate · UV High
66
Fri
💨
Moderate · UV Very high
96
Sat
💨
Moderate · UV Low
68
Sun
💨
Moderate · UV High
76