DEW Point

Temperature at which air can hold no more moisture. The further a surface is below dew point temperature, the more condensation will occur.

Dew point is the temperature at which air becomes saturated with moisture vapor, and can hold no more water vapor. When air is cooled, its capacity for water vapor is reduced. Eventually, if temperature is cooled enough, the relative humidity will reach 100%, or saturation. When this occurs, the air has reached its dew point temperature.


(RSA)