The boiling point of water is linked to atmospheric pressure. The higher the atmospheric pressure, the higher its boiling point.
The maximum temperature of boiling water depends on the air pressure of the place where the water is boiled and the tightness of the container for boiling the water! The boiling temperature of water in a regular pot at home is usually around 95 to 99 degrees Celsius, while the boiling temperature of water in a pressure cooker can reach around 120 degrees Celsius.