If you are talking about Earth the Exosphere can reach temperatures of 2,500 °C (4,530 °F) during the day. Even though the temperature is so high, you would not feel warm even in the thermosphere which can get up-to 1,500 °C (2,730 °F), you would feel no heat due to the fact there are so few molecules and it is so close to vacuum.
Since there is no clear boundary between outer space and the exosphere, the exosphere is sometimes considered a part of outer space. So people use the Thermosphere as the delineator
In the valleys of tropical regions. the higher you go the colder it gets.
The hottest temperatures in the atmosphere
mesophere
The coldest air temperatures can be found in the outermost portion of the atmosphere. Temperatures of 70 and 80¡ below zero are common in the atmosphere beginning at approximately 10 miles above the surface of the earth and extending outward.
stratosphere
The mesosphere is the layer of the atmosphere that exists between the stratosphere and the thermosphere. It contains the coldest parts of the Earth's atmosphere, reaching temperature depths of -90°C.
MESOSPHERE is the coldest layer of the atmosphere.
The mesosphere is the coldest layer of the earth's atmosphere.
The coldest air temperatures can be found in the outermost portion of the atmosphere. Temperatures of 70 and 80¡ below zero are common in the atmosphere beginning at approximately 10 miles above the surface of the earth and extending outward.
stratosphere
thermosphere
The mesosphere is the layer of the atmosphere that exists between the stratosphere and the thermosphere. It contains the coldest parts of the Earth's atmosphere, reaching temperature depths of -90°C.
A layer in the atmosphere in which temperature increases with altitude.
MESOSPHERE is the coldest layer of the atmosphere.
thermosphere
The mesosphere is the coldest layer of the earth's atmosphere.
The mesosphere is part of the atmosphere. It is the coldest part and can reach temperatures of nearly minus 100 degrees.
Around 80 km in height in the mesosphere is the third layer of the atmosphere of Earth. The temperature decreases as you go up, as in the troposphere. It can be up to -90 ° C. It is the coldest part of the atmosphere.
Well, mesosphere is the middle layer of the atmosphere; also the coldest temperature of all the layers is here.
The Yukon The Yukon