Air quality in Washington
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
2.7 µg/m³
WHO guideline 15
PM10
5.2 µg/m³
WHO guideline 45
Hour by hour (12h)
US EPA AQI
6:00 AM
💨
PM2.5 2.7 µg/m³
30Good
7:00 AM
💨
PM2.5 2.8 µg/m³
30Good
8:00 AM
💨
PM2.5 2.9 µg/m³
30Good
9:00 AM
💨
PM2.5 2.8 µg/m³
32Good
10:00 AM
💨
PM2.5 2.6 µg/m³
34Good
11:00 AM
💨
PM2.5 2.9 µg/m³
38Good
12:00 PM
💨
PM2.5 3.1 µg/m³
41Good
1:00 PM
💨
PM2.5 3 µg/m³
41Good
2:00 PM
💨
PM2.5 2.9 µg/m³
39Good
3:00 PM
💨
PM2.5 2.7 µg/m³
37Good
4:00 PM
💨
PM2.5 2.6 µg/m³
36Good
5:00 PM
💨
PM2.5 2.5 µg/m³
35Good
Next few days
daily max · US EPA AQI
Wed
💨
Good · UV Very high
41
Thu
💨
Good · UV Very high
43
Sat
💨
Moderate · UV Very high
61
Sun
💨
Good · UV Very high
47