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

An instrument for measuring atmospheric pressure.

Local winds that blow from slopes to peaks as a result of the heating of the top slopes without being affected by general...

The formation of fog when warm and moist air passes over a cool or cold surface or, conversely, when cold air passes over...

Particles such as pollen, grass seeds, or dust in the air that cause allergies and are transported by winds.

A tropical cyclone, also called a hurricane, is a severe tropical storm with wind speeds in excess of 74 mph. Known as a...

The lowest level of a given cloud or cloud layer in the atmosphere, relative to the observer's position above the ground.

A rapidly rotating column of air extending from a thunderstorm to the ground, capable of causing significant damage.

Thermodynamic changes occurring within a system without any exchange of heat with the surroundings. In the atmosphere, changes...

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

A thermodynamic change process in the system without any exchange of heat or transfer of energy between systems. This process...