Assertion (A): Humidity is a measure of the amount of water vapour dissolved in the air, not including any liquid water or ice falling through the air. Reason (R): For clouds to form, and rain to start, the air doesn’t have to reach 100% relative humidity at the Earth’s surface, but only where the clouds and rain drops form. Codes

Humidity is the concentration of water vapor present in the air. Water vapor, the gaseous state of water, is generally invisible to the human eye.