Water present in atmosphere as vapor. It is also knows as moisture or water vapour. As the temperature of atmosphere increases, its capacity to hold water vapour, also increases. The amount of humidity is more in air during rainy season. As the water vapor rises it gets cola and so water vapour holding capacity of air reduces and water vapour condenses into water droplets. Cloud is the group of these water droplets. When these droplets get big they come to the earth by gravitational force and fall on the earth as rain.
