Dark blue cloudy sky

What is Aeroallergens?

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

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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 tropical cyclone with sustained winds of at least 74 miles per hour, characterized by a central eye, strong winds, and...

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

Air laden with sand and dust, common in areas devoid of permanent vegetation, especially deserts.

A blizzard is a storm that lasts 3 hours or more, with persistent winds/frequent gusts of 35 mph or more along with significant...

The term 'cloudy' refers to weather conditions characterized by a significant amount of cloud cover in the sky. This may...

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

Convection is the vertical movement of air caused by temperature differences, where warm air rises and cool air sinks. It...

A long, narrow region in the atmosphere that transport water vapor, like a river in the sky.

A term used to identify clouds with a base height below 6,000 feet in the observer's direction. Stratiform clouds consist...