Delhiites woke up to a foggy morning with overcast skies, as the minimum temperature settled at 9.4 degrees Celsius, a notch above the season's average.
The maximum temperature was forecast to be 19 degrees Celsius, normal for this time of the year, PTI reported quoting a meteorological department official.
Several flights to and from Delhi have been delayed due to dense fog. No flights have been cancelled or diverted.
Around 30 long and short distance Delhi trains are running late on Monday morning due to the dense fog in north India.