Explanation:

The atmospheric pressure is low all over the country due to high temperatures. Since the sun goes gradually towards the north (summer solstice), the Inter Tropical Convergence Zone (ITCZ) begins to move towards the north (Eventually reaching up to 25° latitude in July). The general direction of winds is from the north-west and west in north-western India, and from the south-west in the Arabian Sea and adjoining coasts. In the months of May and June, the high temperature in north-western India builds steep pressure gradient. Under such conditions, hot dust-laden strong winds known as ‘loo’ blow.