dew point, definition of

Dew Point

The dew point is the temperature to which a given parcel of humid air must be cooled, at constant barometric pressure, for water vapor to condense into water. The condensed water is called dew. The dew point is a saturation temperature.

The dew point is associated with relative humidity. A high relative humidity indicates that the dew point is closer to the current air temperature. Relative humidity of 100% indicates the dew point is equal to the current temperature and the air is maximally saturated with water. When the dew point remains constant and temperature increases, relative humidity will decrease.
News & Blog articles where 'dew point' used:
  • California Wildfires, Climate Change, and the Hot-Dry-Windy Fire Weather Index
    Reposted from Dr Roy Spencers Blog California Wildfires, Climate Change, and the Hot-Dry-Windy Fire Weather Index November 1st, 2019 by Roy W. Spencer, Ph. D. Summer and early Fall are fire season in California. It has always been this way. Most summers...
  • Fogageddon
    I suppose if  I truly want to take the weekend off, I’ll have to ditch my smartphone. These photos from the Facebook page of the Panhandle Helicopter Service in Panama City Beach, Florida, have been making the rounds today, erroneously …...
  • Heated worries? Be alerted about temperature and humidity
    As many know, I create instrumentation and display systems that do a wide variety of weather monitoring tasks. Usually I focus on weather and climate measurement in situ. Now, I have something useful for alerting you to problems of mission … Continue...

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