Delhiites woke up to a dense layer of fog this morning with the mercury dipping to 5.5 degrees, which is three degrees below normal. The India Meteorological Department has forecast mainly clear sky for the rest of the day. The maximum temperature is expected to hover around 25 degrees Celsius, two degrees above normal.<br />'' <br />''Indian Meteorological Department has forecast dense fog at isolated places for the next four days in Delhi, Punjab, Haryana and Chandigarh. Minimum temperatures are in the range of 4-8 degrees over many parts of Punjab, Haryana, Chandigarh and some parts of Uttar Pradesh. <br />