Relative humidity also varies with . air can hold more water vapour than air. When temperature , the amount of water vapour in the air stays the same, but the rise in temperature makes the air able to hold water vapour. Thus, relative humidity as temperature increases.

occurs when relative humidity is at per cent. Thus, when air holds the amount of water vapour it can hold at a particular temperature, it is said to be . The particular temperature at which saturation occurs is known as the dew point temperature. At point temperature, starts to occur. Condensation is a process in which water vapour s to a liquid known as water droplets by .