In Punjab, fog and mist reduced visibility to less than 50 metres at several places, including Patiala, Amritsar, Hisar, Karnal Ambala and Ludhiana.
Low visibility also hit flight operations in Chandigarh and Amritsar.
"No flight took off today as there was zero visibility due to fog," Amritsar Airport Director Suneel Dutt said.
Morning flights from Delhi to Chandigarh are behind their scheduled arrival timings because of fog, officials at Chandigarh Airport said.
Fog also cast a shadow on rail traffic at Chandigarh as departure of several trains, including the Shatabdi (New Delhi-Kalka), Himalayan Queen and Bhiwani-Kalka were delayed by one and a half hours while arrival of few trains, including Allahabad-Chandigarh train was delayed by 9 hours.
Adampur in Punjab turned out to be the coldest place in the region as it recorded a minimum temperature of 2.2 degrees Celsius, Met department officials said in Chandigarh on Tuesday.
Among other places in Punjab, Ludhiana recorded a temperature of 5.3 degrees Celsius. Amritsar and Patiala recorded a low of 7.8 degrees Celsius and 7.6 degrees Celsius respectively, they said.
In Haryana, Ambala, Hisar and Narnaul had a minimum temperature of 8.5 degrees Celsius, 6.6 degrees Celsius and 7.3 degrees Celsius, respectively. While Bhiwani and Karnal recorded a temperature of 7.2 degrees Celsius and 8 degrees Celsius.
Meanwhile, Union Territory Chandigarh recorded a temperature of 8.3 degrees Celsius.
Met department in its forecast said that fog and mist will prevail during morning and night in Punjab and Haryana.


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