Whatever the causes of the smog, by one ranking Delhi was not just the most polluted city in the world, but “nearly five times as bad as the second most polluted city, Dhaka,” in Bangladesh next door, as Shashi Tharoor, a leader of the opposition in Parliament and best-selling author, posted on X.

In the wake of air pollution, restrictions under GRAP 4 have been imposed in the city and as part of the curbs, there is a ban on construction and demolition activities, including linear public projects such as highways,

Delhi recorded air pollution more than 17 times above an acceptable level as worsening smog triggered curbs on trucking and shuttered construction sites and schools.

A successful execution of these 10 measures is expected to bring down PM 2.5 levels to 72 μg/m3 and PM 10 levels to 120 μg/m3