Dense fog disrupted flight and train schedules, and travellers to and from the national capital experienced delays with over 75 trains running many hours late.

"The low visibility procedure was initiated early Monday morning on the runway as visibility fell below 50 metres," said a spokesperson of the Delhi International Airport.

At the Indira Gandhi International Airport, the schedule of over 30 domestic and international flights was affected due to fog. 10 flights were cancelled due to operational reasons.