The minimum temperature in the national capital was recorded at seven degrees Celsius, while the maximum temperature was at 19.7 degrees Celsius, both of which were normal for this time of the year.
A railway official said 14 trains have been delayed by an average of two hours due to fog. Ranchi-Delhi and Jaynagar-Anand Vihar Garib Rath, Farakka Express, Poorva Express, Sealdah-Rajdhani were among those delayed.
A cover of moderate fog enveloped the city with visibility reduced to 200 metres at Palam and 400 metres at Safdarjung, at 5.30am.
The humidity level oscillated between 100 and 63 per cent.
The weather office has forecast clear skies along with the possibility of moderate fog for Wednesday morning.
"The skies will be clear. There will be moderate fog inthe morning and haze and smoke thereafter. The maximum and minimum temperatures are likely to hover at 20 and 7 degrees respectively," officials said.
On Monday, the minimum temperature in the national capital was recorded at 7.1 degrees Celsius, while the maximum temperature was 20.1 degrees Celsius.
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