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
8.3 µg/m³
WHO guideline 15
PM10
8.5 µg/m³
WHO guideline 45
Hour by hour (12h) US EPA AQI
7:00 AM
💨
PM2.5 8.3 µg/m³
35 Good
8:00 AM
💨
PM2.5 9.3 µg/m³
39 Good
9:00 AM
💨
PM2.5 10.4 µg/m³
43 Good
10:00 AM
💨
PM2.5 10.9 µg/m³
45 Good
11:00 AM
💨
PM2.5 11.1 µg/m³
56 Moderate
12:00 PM
💨
PM2.5 10.3 µg/m³
78 Moderate
1:00 PM
💨
PM2.5 8.2 µg/m³
93 Moderate
2:00 PM
💨
PM2.5 6.6 µg/m³
99 Moderate
3:00 PM
💨
PM2.5 5.9 µg/m³
104 Unhealthy for Sensitive Groups
4:00 PM
💨
PM2.5 5.6 µg/m³
103 Unhealthy for Sensitive Groups
5:00 PM
💨
PM2.5 5.5 µg/m³
91 Moderate
6:00 PM
💨
PM2.5 6.8 µg/m³
58 Moderate
Next few days daily max · US EPA AQI
Thu
💨
Unhealthy for Sensitive Groups · UV High
104
Fri
💨
Unhealthy for Sensitive Groups · UV Moderate
106
Sat
💨
Moderate · UV Low
57
Sun
💨
Moderate · UV Low
61
Mon
💨
Moderate · UV High
57
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Precip NEXRAD · NOAA Temp Wind Clouds Terrain