Dark blue cloudy sky

What is Relative Humidity?

The percentage of water vapor in the air relative to the maximum amount of water vapor the air can hold at a given temperature.

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Glossary

Conduction is the transfer of heat or electricity through a material without the material itself moving. This occurs when...

The measure of the water vapor or moisture content in the air, expressed as the mass of water vapor per unit volume of air....

A low-pressure area with converging winds, rotating counterclockwise in the Northern Hemisphere and clockwise in the Southern...

Frozen drizzle is a dangerous type of frozen rain. It’s a light rain that falls in very fine drops, which freezes on contact...

An elongated area of relatively low atmospheric pressure, often associated with unsettled weather conditions like storms...

The heating of the Earth by the sun causes daily changes in both the direction and speed of the wind. During the day, ground...

A drainage wind that flows downhill due to gravity, often associated with cold air descending from elevated regions.

Bright and dark rays with changing colors and contrast in the sky. These rays become visible due to the reflection of atmospheric...

A weather front where two air masses meet but neither is strong enough to move the other, often resulting in prolonged periods...

The decrease in temperature with height in an adiabatically rising air parcel (lapse rate). For dry air, this value is 1...