According to the MeT department, the minimum temperature of 4.2 degrees Celsius was four notches below normal.

On Sunday, the morning temperature had settled two points below the season's average at 6.4 degrees Celsius.
Dense fog enveloped the national capital this morning with visibility dropping to zero in the early hours. However, visibility improved to 150 metres by 9 AM.

Nearly two dozen flights were affected as dense fog stalled operations at the New Delhi airport this morning -- the first major disruption this winter season.

Sixteen departures were delayed due to drop in visibility at the Indira Gandhi International Airport, an airport spokesperson said.

Besides seven arrivals were also delayed, he said.

Also, dense fog on Monday badly hit train operations with 70 North-bound trains running behind schedule for several hours, causing inconvenience to passengers.

While the Rajdhani trains coming from Bhubaneswar, Sealdah and Ranchi were running late by about three to four hours, service of other Delhi-bound trains are also being severely affected due to adverse weather, said a senior Northern Railway official.

Magadh Express is running 18 hours late while Poorvottar Sampark Kranti Express is behind schedule by 18 hours. Northeast Express and Mahananda Express are running 12 hours late.

"We have made arrangements for informing passengers about the train position on regular basis besides setting up helplines for public," said the official, adding "departures of affected trains have been rescheduled."
Train drivers have been instructed to drive at a slow speed during the foggy condition.

Traffic moved slowly due to foggy conditions but there were no major traffic jams, said a senior traffic police official.

Weatherman said that the temperature will improve by afternoon. The day temperature may settle around 14 degree Celsius.

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