Cold and fog continued in north India, including capital Delhi Sunday morning. Visibility at the international airport dropped to zero, and over 90 trains were cancelled.
The situation was similar in Amritsar and Agra. Uttar Pradesh was better off, as the fog became shallower and visibility improved.
Parts of Bengal, such as Siliguri, also reported fog, but not as dense as seen in north India. Fog also disrupted rail and air transport in some cities of Bihar and Imphal.
Here are some of the flights and trains that have been delayed or cancelled.