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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

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

Condensation is the process by which water vapor in the air cools and changes into liquid water. This process is crucial...

A cold front is the leading edge of a cold air mass that replaces a warmer air mass. It is typically associated with sudden...

A middle cloud type within the B family in the international cloud classification. These clouds consist of water droplets...

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

The reflectance rate of a surface, indicating the amount of electromagnetic radiation reflected from the surface. It depends...

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

An elongated area of relatively low atmospheric pressure, often associated with unsettled weather conditions like storms...

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

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