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
22.1 µg/m³
WHO guideline 15
PM10
23.8 µg/m³
WHO guideline 45
Hour by hour (12h)
US EPA AQI
10:00 PM
💨
PM2.5 22.1 µg/m³
72Moderate
11:00 PM
💨
PM2.5 29.9 µg/m³
88Moderate
12:00 AM
💨
PM2.5 39.6 µg/m³
111Unhealthy for Sensitive Groups
1:00 AM
💨
PM2.5 45.2 µg/m³
125Unhealthy for Sensitive Groups
2:00 AM
💨
PM2.5 47 µg/m³
129Unhealthy for Sensitive Groups
3:00 AM
💨
PM2.5 47.3 µg/m³
130Unhealthy for Sensitive Groups
4:00 AM
💨
PM2.5 47.1 µg/m³
130Unhealthy for Sensitive Groups
5:00 AM
💨
PM2.5 47.1 µg/m³
130Unhealthy for Sensitive Groups
6:00 AM
💨
PM2.5 47.4 µg/m³
130Unhealthy for Sensitive Groups
7:00 AM
💨
PM2.5 47.6 µg/m³
131Unhealthy for Sensitive Groups
8:00 AM
💨
PM2.5 48.1 µg/m³
132Unhealthy for Sensitive Groups
9:00 AM
💨
PM2.5 44 µg/m³
122Unhealthy for Sensitive Groups
Next few days
daily max · US EPA AQI
Fri
💨
Unhealthy for Sensitive Groups · UV Moderate
107
Sat
💨
Unhealthy for Sensitive Groups · UV Moderate
132
Sun
💨
Unhealthy · UV Moderate
152
Mon
💨
Unhealthy · UV Moderate
153
Tue
💨
Moderate · UV Moderate
76