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.

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

The temperature at which air becomes saturated with moisture and water vapor begins to condense into liquid form, leading...

Frozen drizzle is a dangerous type of frozen rain. It’s a light rain that falls in very fine drops, which freezes on contact...

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

The decrease in temperature with height in an adiabatically rising air parcel (lapse rate). For dry air, this value is 1...

A very cold high pressure that originates over the Arctic Ocean.

The mass of air surrounding the earth and bound to it more or less permanently by the earth's gravitational attraction.

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

A cloud that develops from Cirrus, completely or partially covering the sky, creating a halo effect, thin, sheet-like, milky...