The graph above shows the variation of water’s boiling point with the altitude above sea level. At 0 ft (Sea level) , the boiling point of water is 212 Fahrenheit (100 degrees). As the altitude increases, the boiling point of water reduces. The boiling point of water depends on the pressure at that altitude. read more
As the altitude increases, the atmospheric pressure pushing down on water decreases, which allows the water to boil at lower temperatures. A lower boiling point means that food cooks at a lower temperature, despite the fact that the water is boiling. read more