Cold wave continues in the national capital. Dense fog descended in Delhi this morning disrupting air and rail traffic. Met Department said the minimum temperature was recorded at eight degree Celsius. The pace of vehicular traffic was slow in the morning due to fog which dropped the visibility to below 100 meters level. Some trains are also running late. Around 25 international and domestic flights were delayed by up to two to three hours while 10 domestic flights to Agartala, Mumbai, Bhubaneswar, Pune, Chennai, Amritsar, Lucknow, Leh and Coimbatore were cancelled due to the fog. <br/>The Weatherman has predicted dense fog on Friday while the temperature will oscillate between six and 19 degree Celsius.