What layers have the coldest temperatures?

The coldest temperatures in Earth's atmosphere are typically found in the stratosphere, particularly in the lower stratosphere, where temperatures can drop to around -60 degrees Celsius (-76 degrees Fahrenheit). However, the coldest temperatures overall are recorded in the mesosphere, which can reach as low as -90 degrees Celsius (-130 degrees Fahrenheit) at the mesopause, the boundary between the mesosphere and the thermosphere. These layers are characterized by decreasing temperatures with altitude due to the thin air and low density.