Sulphur Springs Look only
Sulphur Springs reads 194°F at the source (NCEI, historical reading). Managed by Yellowstone National Park (checked 2026-08-19).
194°F / 89°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 44.653° N, 110.482° W · USGS National Map
- Land manager Yellowstone National Park — checked 2026-08-19
The rule here
This is a thermal feature to see, not a place to get in the water. Yellowstone National Park puts it this way:
“On the other end of the temperature spectrum, the water in park hot springs often reaches the boiling point. For this reason, and to protect the park's unusual thermal environments, soaking in hot springs is prohibited.”
— Yellowstone National Park, checked 2026-08-19
Nearby springs
-
Sulphur Caldron
3 miles away · Wyoming · 190°F at the source
Look only
-
Mud Volcano
3 miles away · Wyoming · 131°F at the source
Look only
-
Mud Geysers
3 miles away · Wyoming
Look only
Identity, coordinates, and temperature quoted from the NCEI Thermal Springs List (historical reading, 1981 compilation).