India, Jan. 25 -- Moderate to dense fog is likely to cover Delhi on Friday morning, with visibility predicted to plummet to 100m till about 8.30am before the skies begin to clear up to some extent, the India Meteorological Department said in a weather bulletin on Thursday, in which it also forecast "cold day" conditions in parts of the city.

According to the prediction, visibility will dip to as low as 100 metres till 8.30 am before it begins improving to 500-800 metres by 10 am and further to 800-1,500 metres by 10.30 am, the prediction said, with an accompanying orange alert that is sounded as a general caution for people to be careful because of the weather.

While IMD forecasts are often wanting for accuracy, the fog is likely to cle...