Air quality in West Lake Sammamish
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
19.5 µg/m³
WHO guideline 15
PM10
19.8 µg/m³
WHO guideline 45
Hour by hour (12h)
US EPA AQI
6:00 AM
💨
PM2.5 19.5 µg/m³
67Moderate
7:00 AM
💨
PM2.5 18.5 µg/m³
64Moderate
8:00 AM
💨
PM2.5 19 µg/m³
66Moderate
9:00 AM
💨
PM2.5 17.3 µg/m³
62Moderate
10:00 AM
💨
PM2.5 17.2 µg/m³
62Moderate
11:00 AM
💨
PM2.5 15.7 µg/m³
59Moderate
12:00 PM
💨
PM2.5 14 µg/m³
55Moderate
1:00 PM
💨
PM2.5 12.5 µg/m³
52Moderate
2:00 PM
💨
PM2.5 11.1 µg/m³
49Good
3:00 PM
💨
PM2.5 9.5 µg/m³
51Moderate
4:00 PM
💨
PM2.5 8.2 µg/m³
56Moderate
5:00 PM
💨
PM2.5 7.5 µg/m³
56Moderate
Next few days
daily max · US EPA AQI
Sun
💨
Moderate · UV Moderate
78
Mon
💨
Moderate · UV Low
86
Tue
💨
Moderate · UV Moderate
68
Wed
💨
Moderate · UV Moderate
100
Thu
💨
Moderate · UV Moderate
84