The Centre's Decision Support System (DSS) for Air Quality Management estimated that vehicular emissions contributed 18.1 per cent to Delhi's pollution on Sunday. Stubble burning, another major factor, accounted for 19 per cent of Delhi's pollution on Saturday.

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.

Unhealthy

Leaders of Indian capital must tackle transport and heavy industry rather than seek quick fixes, say campaigners

Singhu border on November 22 to inspect the implementation of stage IV of the Graded Response Action Plan (GRAP).

Low visibility led to several train delays of 24 to 39 minutes on average. Jansadharan Express from Anand Vihar to Danapur, which was delayed by over 11 hours

Delhi woke up to hazardous smog and severely reduced visibility on Saturday morning as the air quality index (AQI) reached 420, plunging back into the "severe" category. Many areas within the city reported dangerously high pollution levels,

Experts attribute the deteriorating conditions to a mix of vehicular emissions, industrial pollution, and unfavourable weather patterns