First cause would be first or I would say the major cause would be stubble burning national capital shares its border with states of Haryana and Utta Pradesh one of the main reasons for increasing air pollution during the month of October November is crop burning by the farmers in these states second reason can be vicar emissions delhi has more than 9 million registered vehicles the Central Pollution Control have declared vehicle emissions as the major contributor to the least pollution third reason would be whether during the winter season dust particles and pollutants in air become unable to move due to the stagnant wind these pollution get locked in the air resulting in smoke with more than 110 people per square kilometer delhi is among the most densely populated cities in the world overpopulation adds up to the various types of pollution which would make the fourth reason or fourth cause of pollution also lack of infrastructure and construction activities and open waste burning largescale construction in the lengthy is another culprit that is increasing dust and pollution in the air delhi also had landfill sites for dumping of waste burning of waste and in these sites also these sites also contributes to the air pollution another reason can be dealt with generators a large number of housing society and businesses resort to using diesel generators as alternate for power supply during cuts diesel generators contribute approximately 15% to the city's air pollution point out the problems caused by air pollution air pollution severely affect human health it is found to cause low birth weight in children tuberculosis