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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The process by which a solid changes directly into a gas without first becoming a liquid, such as ice turning into water...

Cloud or rain droplets containing pollutants, such as oxides of sulfur and nitrogen, to make them acidic.

A low-pressure area with converging winds, rotating counterclockwise in the Northern Hemisphere and clockwise in the Southern...

Considerable cloudiness refers to weather conditions where a large portion of the sky is covered with clouds, but some clear...

Ball lightning appears during thunderstorms, taking the shape of glowing, electric orbs in the sky. It can appear in a variety...

A condition in which the stratification of the atmosphere depends on both air temperature and pressure, and where surfaces...

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

A polar vortex is a circulating mass of air in the atmosphere, typically found in polar regions. This rotating air mass occurs...

Although it is also used for light winds, it is the general name given to the daily cyclical winds that occur mostly between...

The percentage of water vapor in the air relative to the maximum amount of water vapor the air can hold at a given temperature.