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

A weather system refers to the movement of warm and cold air across the globe, usually in a recurring pattern. Systems can...

A cloud of irregular appearance, composed of irregular cloud fragments.

A towering cloud that often reaches great altitudes and is associated with thunderstorms, heavy rain, and sometimes severe...

A strong wind typically ranging from 34 to 40 knots (39 to 46 miles per hour) and often associated with rough seas and stormy...

A very cold high pressure that originates over the Arctic Ocean.

A weather watch means there is a risk of weather hazards in the near future, which could pose a threat to life/property....

Condensation pressure deficit refers to the difference between the actual vapor pressure and the saturation vapor pressure...

A line on a weather map connecting points of equal atmospheric pressure, used to identify high and low-pressure systems.

A cold core high is a high-pressure system with cold air at its center. These systems are typically associated with clear...

A thick cloud of tiny water droplets suspended in the atmosphere near the Earth's surface, significantly reducing visibility.