What the percentage ofmost polluted indian cities in 2018?
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Of the most polluted cities in the world, 22 out of 30 were in India in 2018. As per a study based on 2016 data, at least 140 million people in India breathe air that is 10 times or more over the WHO safe limit and 13 of the world's 20 cities with the highest annual levels of air pollution are in India
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