A thick blanket of fog engulfed entire Punjab, Haryana and Chandigarh even as the minimum temperature rose up to a few notches in the region.
Low visibility due to dense fog affected air, rail and road traffic in most parts of Punjab, Haryana and Chandigarh, officials said here.
The entire Punjab, Haryana and Chandigarh remained engulfed under dense fog reducing visibility to just a few metres, the MeT office said.
However, the minimum temperatures in the plains of Punjab and Haryana hovered between four degree celsius above normal to three notches below normal, the MeT office said.
Hisar was the coldest place in the region with a low of 3.5 degree celsius, which was three notches below normal.
While Narnaul braved a low of four degree celsius, one notch below normal, both Bhiwani and Amritsar recorded a temperature of 5.6 degree celsius, two notches above normal.
Among other places, Ludhiana settled at a low of six degree celsius, one notch below normal, followed by seven degree celsius at Patiala, 7.3 degree celsius at Karnal, 8.8 degree celsius at Chandigarh, four notches above normal and 9.1 degree celsius at Ambala, two notches above normal.
The dense fog delayed many trains by several hours and air traffic was also disrupted in the region.
While, motorists forced to move at a snail's pace due to low visibility. The MeT forecast drop in night temperatures in the region during the next two days.