Cascade Range · WA
Mount Si
4,167
Elevation ft
2,700
Prominence ft
Pacific Northwest
Region
Routes · 0
+ Suggest a RouteWeather Forecast
5-Day Air Quality Forecast
Today
41
Good
Tomorrow
41
Good
Sat, Sep 26
37
Good
Sun, Sep 27
42
Good
Mon, Sep 28
58
Moderate
PM2.5 wildfire smoke threshold: 35 μg/m³ · Source: CAMS via Open-Meteo
7-Day Forecast
Today
Drizzle
55° / 39°
27%
💧0.02"
💨12
Tomorrow
Rain
48° / 36°
99%
💧1.40"
💨17
Sat, Sep 26
Drizzle
49° / 34°
22%
💧0.01"
💨8
Sun, Sep 27
Overcast
52° / 32°
1%
💨5
Mon, Sep 28
Overcast
52° / 31°
12%
💨7
Tue, Sep 29
Rain
43° / 38°
49%
💧0.60"
💨6
Wed, Sep 30
Partly Cloudy
49° / 33°
40%
💨6
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