AQI.in rankings published after Diwali showed 93 Indian cities among the world’s 100 most polluted locations. New Delhi, however, was not among the Top 10 cities. Following Diwali celebrations, 99 out of the world's 100 most polluted cities are in India, with Punjab's Bathinda and Faridkot topping the list. Punjab’s Bathinda topped the global list at 8.30 am with an Air Quality Index (AQI) of 816, followed by Faridkot at 804.