In India is estimated to kill 1.5 million people every year, as per WHO Delhi is also included in High pollution areas.
Delhi, with an area of 1483 km2 , is geographically located in North India within the latitude 28°24’17” and 28°53’00’’N, and longitude 77°45’30’’ and 77°21’30’’E . Delhi is jointly administered by the Central and State Government. As of 2011, Delhi inhabitants approximately 16.3 million people; thus becoming the second most populous city and second most populous urban agglomeration in India. Delhi is also the third largest urban area in the world. However, due to rapid development, Delhi is also facing serious challenges in terms of air pollution. To tackle the situation, Delhi has taken several steps to reduce the air pollution level during the last 10 years. However, more concerted efforts are still required to reduce the pollution level.
The Global Burden of Diseases estimates for 2017 has shown that early deaths related to PM 2.5 in India are the second highest in the world. These particles could delay the rains or even disperse the rains depriving the city of showers, said Abhijit Chatterjee, an atmospheric scientist at Bose Institute in Kolkata.
While primary particles such as SO2 and NO2 are directly released into the air from vehicles and industries, secondary particles such as sulfates, nitrates, and organic aerosols form in the air from these primary particles. They are equally harmful.