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 middle cloud type within the B family in the international cloud classification. These are shaded clouds that can be white...

The formation of ice crystals on surfaces when the temperature drops below freezing, typically overnight, causing potential...

Large, fluffy white clouds with flat bases, typically indicating fair weather, though they can develop into storm clouds...

A thin, white cloud layer that is intertwined or separate, arranged in regular order, and does not cast a shadow.

Precipitation in the form of small balls or lumps of ice that form in thunderstorm updrafts and fall to the ground.

An instrument that continuously records atmospheric pressure over time. It uses a barometer to measure pressure and creates...

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

Condensation is the process by which water vapor in the air cools and changes into liquid water. This process is crucial...

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