This is an image of Pluto.
Click on image for full size
Image from: NASA
A Look at Pluto's Atmosphere
It may seem hard to believe that Pluto could have an atmosphere because it is so cold, but it does. Because there are times when Pluto is closer to the sun than is Neptune (making it the 8th planet for roughly 20 years at a time), ices on Pluto's surface evaporate and form an atmosphere.
The air is made mostly of nitrogen gas, just like that of the Earth and Saturn's moon Titan.
The atmosphere is also similar to that of Neptune's moon Triton.. On Triton there are seasons and winds. On Pluto, there may even be clouds and storms. However, seeing these clouds and winds on Pluto is difficult.
It is also possible that the presence of nearby Charon draws molecules to it which are escaping from Pluto's atmosphere, as suggested in this image. So this double planet may exchange atmospheric molecules.
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