Answer: It is the amount of water vapour in the air in grams per cubic metre. Relative Humidity is generally referred as Humidity. Humidity may also be expressed as Absolute Humidity and Specific Humidity. Relative humidity is an important metric used in forecasting weather. Humidity indicates the likelihood of precipitation, dew, or fog. High humidity makes people feel hotter outside in the summer because it reduces the effectiveness of sweating to cool the body by reducing the evaporation of perspiration from the skin. This effect is calculated in a heat index table.
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