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

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

A large body of air having similar horizontal temperature and moisture characteristics.

A deviation from the normal or expected value in atmospheric or climatic conditions, often used in meteorology to identify...

The upward movement of air caused by a topographic barrier, such as a mountain, which can lead to cloud formation and precipitation.

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

A cold core low is a low-pressure system where the coldest temperatures are found near the center. These systems are often...

The term used for semi-stationary high-pressure centers such as the Azores and North Pacific Highs, which occur in the narrow...

A measure of how hot it feels when relative humidity is combined with the actual air temperature, often referred to as the...

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

Cloud condensation nuclei are tiny particles in the atmosphere, such as dust, salt, or pollutants, that provide surfaces...