Dense fog enveloped Punjab, Haryana and Chandigarh on Thursday affecting air, rail and road traffic even as the minimum temperature plummeted by up to five degrees Celsius below normal in the region.
Plains of Punjab and Haryana remained engulfed in dense fog reducing visibility to near zero, the Met office said here.
While, trains bound for Amritsar, Pathankot, Bathinda, Ferozepur and Chandigarh ran hours behind schedule, flights failed to take off from Chandigarh and Amritsar airports.
The minimum temperature hovered between one and five degrees Celsius below normal in the region with Amritsar being the coldest place with a low of minus one degree Celsius.
Among the other places, Patiala and Narnaul braved an identical low of 4.2 degrees Celsius, three notches below normal followed by Ambala at 4.3 deg C, which was also three notches below normal.
While, Karnal and Ludhiana reeled under an identical low of 4.7 degrees Celsius, two notches below normal, the minimum temperature at Hisar was 4.8 deg C, one notch below normal.
Chandigarh settled at a low of 5.1 deg C.
The Met forecast fog and mist at night and morning in the next few days.