The Meteorology department has now become smarter due to the current sensor balloon as timely weather updates are supplied. About 40 centres in the nation d these balloons. This balloon goes up to 40 km high and the sensor will be taken to ensure the accuracy of humidity, temperature, wind, rain in the atmosphere. This balloon costs Rest. 12-15 thousand and weighs up to 1.5 kg. Source: Pudhari, 28 June, 2019