What Is The Coldest And Hottest Layer Of The Atmosphere?
What Is The Coldest And Hottest Layer Of The Atmosphere? 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 atmosphere is the thermosphere. Which is hotter thermosphere or exosphere? The thermosphere is directly above the mesosphere and below the exosphere.