4. New Delhi, India
There is a serious problem with air pollution, specifically in places like New Delhi. There, the air is considered the most harmful in the world since it is so horrible. Beijing, which has historically poor air quality, was beaten in 2019 by New Delhi’s air pollution levels by twice. As a result of air pollution, the government is periodically ordered to close schools. Population growth of automobiles and industrial waste is the main reasons of it.
