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
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.
The layer of the atmosphere with the coldest temperatures is the mesosphere. Temperatures here can reach as low as -90 degrees Celsius (-130 degrees Fahrenheit).
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.
The mesosphere is the coldest layer of the earth's atmosphere.
The coldest layer of the atmosphere is the mesosphere, which sits above the stratosphere and below the thermosphere. Temperatures in the mesosphere can drop as low as -90 degrees Celsius (-130 degrees Fahrenheit), making it extremely cold.
thermosphere
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.
The layer of the atmosphere with the coldest temperatures is the mesosphere. Temperatures here can reach as low as -90 degrees Celsius (-130 degrees Fahrenheit).
A layer in the atmosphere in which temperature increases with altitude.
thermosphere
The average temperature in the atmosphere of Ganymede ranges from about -171 degrees Celsius to -186 degrees Celsius, making it one of the coldest places in our solar system.
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.
From Wikipedia:Temperature decreases with height in the mesosphere. The mesopause, the temperature minimum that marks the top of the mesosphere, is the coldest place on Earth and has an average temperature around −100 °C (−148.0 °F; 173.1 K)the mesosphere is the coldest layer in the atmosphere. It contains the ozone.OK!! the answer above is incorrect the coldest layer in the atmosphere is the Mesopause its the thin layer between the Mesosphere and Thermosphere. Also the Ozone is in the Stratosphere.Actually its correct because the mesopause is a part of the mesosphere....ok the 1st and 3rd answers are wrong! i should know im learning this in my 7TH GRADE SCIENCE CLASS! the ozone is in the stratosphere, the second closest layer to the earth. STUPIDS!
The Yukon The Yukon
The coldest part of Jupiter is its upper atmosphere, which can reach temperatures as low as -145°C (-234°F). This frigid temperature is due to the distance from the Sun and the lack of a solid surface on the planet to retain heat.
Neptune is the coldest planet but not by much. Neptunes surface temperature is 72K whereas Uranus is 76K.
The coldest temperature was minus 28 degrees F.