What's alarming, according to the report, is that air pollution is likely to cause the death of an estimated seven million lives globally in the next year while costing the world's economy almost $ 225 billion. Other Indian cities that made their way into the world's polluted cities list are Ghaziabad, Faridabad, Bhiwandi, Noida, Patna and Lucknow. India notches up health-care costs & productivity losses from contamination of as much as 8.5 % of GDP, according to the World Bank.
India accounts for seven of the world's 10 cities with the worst air pollution, as per a study conducted by the environment NGO Greenpeace.
The report, Global Air Pollution 2018, was officially released on Tuesday.
India is home to 15 of the 20 most polluted cities in the world, they said.
The Greenpeace and AirVisual analysis of air pollution readings from 3,000 cities around the world found that 64% exceed the World Health Organization's annual exposure guideline for PM2.5 fine particulate matter - tiny airborne particles, about a 40th of the width of a human hair, that are linked to a wide range of health problems.
This comes when India already has the most number of real-time data coverage centers, monitoring the air quality index around the country.
According to the World Bank, health-care costs and productivity loss from pollution covers almost 8.5% of gross domestic product in India.
Stressing on the world economy Yeb Sano, Executive Director of Greenpeace South East Asia said "Air pollution steals our livelihoods and our futures, but we can change that".