Vayu is a Sanskrit word meaning “wind.” Vayu (or Vayu Deva) is also the name of the Hindu god of the wind. In Hindu tradition, the five elements – fire, earth, water, air (wind) and ether – are represented as gods.
According to ancient yogis, prana is subdivided into five vayus. Being aware of the vayu can help an individual obtain optimum benefits from yogic practices as the movement of prana is the essence of yogic practice.
The weather is predicted by collecting and sharing data to help improve forecasts. Some of the tools used include barometers that measure air pressure, anemometers that measure wind speed, Doppler radar stations to monitor the movement of weather fronts, and psychrometers to measure relative humidity.