Vapor pressure, along with dew point and relative humidity, is one of many ways to express the amount of water vapor in the ...

Over the past couple of days, you may have noticed our NBC5 First Warning Weather Team mention the term “dew point ... gas form. That means that if the air were cooled further, water vapor ...

In simple terms, when the air cools to its dew point, water vapor turns into liquid, forming dew, fog, or clouds. The dew point is a direct measurement of the air’s moisture content—higher dew ...