Chandigarh, Jan 19 (IANS): Dense fog with cold wave continued to engulf across Punjab and Haryana on Sunday, weather officials said.

Road and railway traffic was affected due to low visibility, which reduced to less than 50 metres at several places. Traffic on highways was plying slow, the police said.

The Amritsar-Ambala-Delhi stretch of the National Highway-1 (NH-1) was the worst affected due to dense fog at several places.

On the Sunday morning, the minimum temperature in Chandigarh was 6.6 degrees Celsius, three degrees below the average.

Adampur in Punjab was the coldest region in the north Indian plains with the low temperature at 3.8 degrees Celsius.

In Punjab, Amritsar recorded the night temperature at five degrees Celsius, while it was 6.7 degrees in Ludhiana, 7.6 degrees in Patiala and 7.7 degrees in Gurdaspur.

In neighbouring Haryana, it was 6.2 degrees in Ambala, 5.5 in Narnaul, 5.2 degrees in Sirsa, 5.3 degrees in Hisar and six degrees in Karnal.

Motorists had a tough time driving to work due to dense fog.