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

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

In a severe storm, with a swirling motion in its left rear quadrant, a vertically rotating column of air, often seen with...

Nimbostratus clouds are thick, dark, gray clouds associated with rainy and gloomy days that block the Sun. These clouds,...

Any form of water - liquid or solid - that falls from the atmosphere to the Earth's surface, including rain, snow, sleet,...

An instrument used to measure the speed, force, and sometimes the direction of the wind. It can be cup or pressure tube anemometers....

An instrument for measuring atmospheric pressure.

Weather is the day-to-day meteorological conditions that happen in our atmosphere. Weather can change within minutes, which...

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

A strong, downward wind caused by a localized column of air sinking rapidly, often resulting in damage similar to that caused...

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