Over 45 trains were delayed due to moderate overnight fog.
According to the Northern Railway, 41 trains that were headed to the capital were running late due to the fog, seven were rescheduled and four were cancelled.
The visibility in the morning was 600 metres.
"There was moderate fog in the morning, and the day would be partly cloudy. Very light rain or thundershower could occur in some areas," said an official of the India Meteorological Department.
The city has received received 5.4 mm rainfall since Thursday.
The day's maximum temperature would be around 19 degrees Celsius.
Humidity at 8.30 am was 98 per cent.
Monday's maximum temperature was 21.6 degrees Celsius, a level above the season's average, while the minimum was two levels above the season's average at 8.8 degrees Celsius.