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
13.3 µg/m³
WHO guideline 15
PM10
14.2 µg/m³
WHO guideline 45
Hour by hour (12h) US EPA AQI
9:00 AM
💨
PM2.5 13.3 µg/m³
54 Moderate
10:00 AM
💨
PM2.5 14 µg/m³
55 Moderate
11:00 AM
💨
PM2.5 14.9 µg/m³
63 Moderate
12:00 PM
💨
PM2.5 14.2 µg/m³
81 Moderate
1:00 PM
💨
PM2.5 12.3 µg/m³
93 Moderate
2:00 PM
💨
PM2.5 11.4 µg/m³
98 Moderate
3:00 PM
💨
PM2.5 10.7 µg/m³
96 Moderate
4:00 PM
💨
PM2.5 10.2 µg/m³
90 Moderate
5:00 PM
💨
PM2.5 10.3 µg/m³
73 Moderate
6:00 PM
💨
PM2.5 11 µg/m³
49 Good
7:00 PM
💨
PM2.5 14.8 µg/m³
57 Moderate
8:00 PM
💨
PM2.5 13.1 µg/m³
53 Moderate
Next few days daily max · US EPA AQI
Fri
💨
Moderate · UV Moderate
98
Sat
💨
Moderate · UV Low
54
Sun
💨
Moderate · UV Low
57
Mon
💨
Moderate · UV Moderate
64
Tue
💨
Good · UV Moderate
25
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Precip NEXRAD · NOAA Temp Wind Clouds Terrain