Mt Rainier Fumaroles Look only
Mt Rainier Fumaroles reads 162°F at the source (NCEI, historical reading). Managed by Mount Rainier National Park (checked 2026-08-19).
162°F / 72°C
Boiling-class range at the source — scalds in seconds
Reading from the NCEI Thermal Springs List (historical reading, 1981 compilation). Source temperature — lower pools usually run cooler.
Water temperatures change with flow and season — test before entering, and never submerge your head in warm natural water. CDC guidance on Naegleria fowleri.
- Coordinates 46.852° N, 121.758° W · USGS National Map
- Land manager Mount Rainier National Park — checked 2026-08-19
The rule here
This is a thermal feature to see, not a place to get in the water. Mount Rainier National Park puts it this way:
“You must have a permit to be on a glacier or above normal climbing high camps (~10,000 feet).”
— Mount Rainier National Park, checked 2026-08-19
Worth knowing: The park describes these as vents in the two summit craters that issue steam, hydrogen sulfide, and other gases.
Nearby springs
-
Longmire Mineral Springs
7 miles away · Washington · 77°F at the source
Look only
-
Ohanapecosh Hot Springs
12 miles away · Washington · 122°F at the source
Look only
-
Mt St Helens Fumaroles
50 miles away · Washington · 190°F at the source
Look only
Identity, coordinates, and temperature quoted from the NCEI Thermal Springs List (historical reading, 1981 compilation).