What is the temperature of a spark from a light switch?

The temperature of a spark generated from a light switch can reach between 1,500 to 3,000 degrees Fahrenheit (about 800 to 1,600 degrees Celsius) at its peak. This high temperature occurs briefly when the circuit is broken, creating an electrical arc. However, the spark lasts for only a fraction of a second, so it does not transfer significant heat to surrounding materials.