The blanket of fog also brought down visibility levels which affected train operations.
As many as 69 north-bound trains were running late while 16 have been rescheduled, a railways spokesperson said.
Visibility was recorded at 200 metres at 5.30 AM, which subsequently improved to 400 metres by 8.30 AM, a weather official said.
"The maximum temperature is likely to be around 19 degrees Celsius and partly cloudy conditions will prevail through the day," the official said.
Humidity was maximum at 100 per cent at 8.30 AM.
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