Cumulus clouds are fluffy, white clouds with flat bases that are often seen on a sunny day. They are formed by the convection of warm air, which causes the air to rise and cool, leading to the condensation of water vapor into cloud droplets.
Cumulus clouds are formed when warm air rises and cools, causing water vapor in the air to condense into tiny water droplets. As the droplets accumulate, they form the puffy white appearance characteristic of cumulus clouds.
Cumulus clouds are often associated with fair weather, but they can also develop into larger storm clouds known as cumulonimbus clouds, which can bring thunderstorms and heavy rain.