7 of 10 most polluted cities in world are in India

Seven of the 10 most polluted cities in the world in 2018 are in India, with Gurugram being on the top, according to the data released by IQAir, AirVisual, and Greenpeace. Other cities include Ghaziabad, Noida, and Patna. Pakistan's Faisalabad and Lahore and China's Hotan are also in the top 10. India makes up 22 of the top 30 most polluted cities.