Besides, Delhi also witnessed dense fog on Sunday morning. The occurrence of severe to heavy fog conditions triggers 'Low Visibility Procedures' (LVP) at the airport, and other areas of the city. The visibility dropped to as low as 800 metre.
As per weather agency , the increase in winter chill can be attributed to the fact that there has been no significant changes in the weather pattern across northwestern plains of the country in the past 24 hours. In the wake of this, light and cold northwesterly winds are prevailing over Punjab, Haryana and Delhi region, leading to cold wave conditions in some areas.