Such weather conditions are not typical for May which is the hottest month of the year in the city with a mean maximum temperature of 39.5 degrees Celsius.
Delhi Weather in May: Shallow fog occurs when visibility hovers between 501 and 1,000 metres and the high moisture content in the air, calm winds and a significant difference between the daytime and night-time temperatures create conditions that are favourable for the formation of fog
As far as the temperatures are concerned, similar conditions are expected for the next three to four days at least. In fact, fog situation will also improve and we do not expect dense to very dense fog to be seen over the national capital.
Another Western Disturbance is likely between January 10 to Jan 13, that will be the one to influence a change in the wind pattern. Tomorrow also, cold wave is likely. There may be a slight rise in temperatures but will hover around 4 degrees. Thereafter, cold wave will abate around January 11, wherein minimum will see a rise and may go to about 6 degrees later on.