In the latest live ranking, Delhi is at the top followed by Lahore and Bishkek, and at number 4 is ranked Mumbai, other than Delhi and Mumbai, Kolkata has also made it to the top 10 ranking at number 9.
Kejriwal said that biomass burning is responsible for one-fifth of the state's pollution, which rises considerably during the cold months when security guards and drivers burn wood and other biomass, leading the city to become a gas chamber due to temperature anomaly.