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The forecast is for warm and humid air to sweep across the UK in the coming days. Darren Bett explains how it affects us and how it is measured. Muggy, sultry, clammy, sweaty - all words used to describe a hot and humid day. High humidity can often make people feel uncomfortable and have difficulty sleeping. And humid weather is sometimes ... Humidity refers to the amount of moisture, water vapor, or water molecules present in the atmosphere. What is Humidity ? Humidity is the amount of water vapor present in the air. Water vapor is the gaseous form of water, invisible to the human eye. The more water vapor present, the more humid the air feels. Types of Humidity 1. Absolute Humidity It is the total amount of water vapor present in a given volume of air. Measured in grams of water per cubic meter of air (g/m³). It changes with temperature and pressure because warm air can hold more moisture than cold air. 2. Specific Humidity It ...
