Delhi's Air Pollution: Air pollution shortens lives by almost 10 years in Delhi, the most polluted city in the world, as per Air Quality Life Index 2022. Tanushree Ganguly, Programme Lead, Air Quality at Council on Energy, Environment and Water (CEEW), a not-for-profit policy research institution opines, "Delhi is in that unfortunate position where it is impacted by both local sources which are basically within Delhi city limits as well sources which are outside Delhi city limits." Sources of air pollution within Delhi city limits include vehicular emission, followed by road dust, open waste burning and small-scale industries.