The boiling point of water at sea level is 100 degrees Celsius (212 degrees Fahrenheit). This temperature can vary depending on atmospheric pressure; at higher altitudes, the boiling point decreases. The standard measurement is taken at sea level, where the atmospheric pressure is about 1 atmosphere. When water reaches this temperature, it undergoes a phase transition from liquid to vapor, resulting in steam. This property of water is vital for various scientific, culinary, and industrial processes. The boiling point is one of the key physical properties that make water essential for life and countless applications.