The temperature in the troposphere is between -52 and 17 °C (-62 to 62 °F). The temperature in the stratosphere is about -3 °C (26 °F). The next layer up, called the mesosphere, is very cold. The temperature here is as low as – 93 °C (-135 °F). In the outer layers of the atmosphere the temperature starts to rise again, because there is more heat from the Sun. Temperatures in the outer layer can be as high as 1,727 °C (3,140 °F).