Dark blue cloudy sky

What is Heat Index?

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

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Glossary

Weather intelligence is technology that provides predictive and actionable insights, allowing businesses to adapt to weather-related...

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

A mass of very cold, dry air that mostly originates over the Arctic Ocean.

A sudden electrostatic discharge during a thunderstorm between electrically charged regions of a cloud, between clouds, or...

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

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

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

The expected rate of temperature decrease in an adiabatically rising air parcel when there is no heat exchange with the environment....

The trapping of heat in the Earth's atmosphere due to greenhouse gases, such as carbon dioxide and methane, which allows...

A narrow band of strong winds in the upper atmosphere, typically flowing from west to east and influencing weather patterns.