What condition is required for cloud formation in the atmosphere?

Cloud formation requires a rising parcel of air to reach its dew-point temperature. When air rises, it expands due to lower pressure at higher altitudes, which causes it to cool. As it cools, the temperature of the air parcel can drop to the dew point, which is the temperature at which air becomes saturated with moisture. At this saturation point, water vapor in the air condenses into tiny droplets, forming clouds.

This process is fundamental to cloud formation in the atmosphere. As the rising air continues to cool and expand, more water vapor condenses, leading to the development of a cloud. If the air does not rise and cool, or if it cools without reaching the dew point, condensation will not occur, and clouds will not form. The precise conditions surrounding rising air, including temperature changes and moisture levels, are essential to this process.