Which Is The Coldest Layer Of The Atmosphere?

Which Is The Coldest Layer Of The Atmosphere? Located between about 50 and 80 kilometers (31 and 50 miles) above Earth’s surface, the mesosphere Which layer is coldest and hottest layer? Coldest layer of Earth’s atmosphere is the MESOSPHERE. The temperature there is -90 degree celsius. It can even go lower. Hottest layer of Earth’s