Dew point
Temperature at which air becomes saturated with water vapour during a cooling process / From Wikipedia, the free encyclopedia
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The dew point of a given body of air is the temperature to which it must be cooled to become saturated with water vapor. This temperature depends on the pressure and water content of the air. When the air is cooled below the dew point, its moisture capacity is reduced and airborne water vapor will condense to form liquid water known as dew.[1] When this occurs through the air's contact with a colder surface, dew will form on that surface.[2]
The dew point is affected by the air's humidity. The more moisture the air contains, the higher its dew point.[3]
When the temperature is below the freezing point of water, the dew point is called the frost point, as frost is formed via deposition rather than condensation.[4] In liquids, the analog to the dew point is the cloud point.