Dense Fog Blankets North India, Flight & Train Operations Hit In Delhi— IN PICS

Passengers at Anand Vihar Railway where several trains were cancelled or delayed due to the dense fog, on Wednesday morning. (Photo: ANI)

A thick layer of fog envelops Kartavya Path in Delhi early Wednesday morning. (Photo: ANI)

Devotees brave the cold morning and gather at Rampath for darshan of Ram Lalla at Shri Ram Janmabhoomi Temple in Ayodhya, Uttar Pradesh on Wednesday morning. (Photo: ANI)

View from inside of a plane at Delhi’s IGI airport, flight operations are affected by a thick layer of fog. (Photo: ANI)

Traffic on Kamraj Marg in Delhi amid dense fog on Wednesday morning. (Photo: ANI)

A metro train runs on its tracks during a cold and foggy winter morning, in Gurugram on Tuesday morning. (Photo: PTI)

A man warms himself with a bonfire during a cold and foggy winter morning, in Patna. (Photo: PTI)

Farmers pluck vegetables at a farm on a cold and foggy winter morning, in New Delhi. (Photo: PTI)