At what temperature does water boil?

At sea level, water boils at 100 degrees Celsius or 212 degrees Fahrenheit. Altitude and the purity of the water are factors that affect the boiling point.

As the altitude increases, the boiling point of water decreases. Below sea level, the boiling point of water increases.

The purity of the water also affects its boiling point. For instance, salt water boils at a higher temperature than pure water.

It is easy to boil water. A pot is filled with water and placed on the stove. The heat is turned to high. When large bubbles rise from the bottom of the pot to the surface of the water, it is boiling.