Cold weather conditions along with moderate fog prevailed in many regions of the Delhi-NCR on Saturday. The minimum temperature recorded in the national capital was 10.7 degrees Celsius.
According to the IMD, "The visibility recorded (at 1730 hours IST of today)(<=500 m): Uttarakhand: Pantnagar-200; Punjab: Ludhiana-200; Haryana: Bhivani-500; Delhi: Safdarjung-500; UP: Bareilly, Bahraich and Prayagraj-200 each, Aligarh, Lucknow, Gorakhpur, Fursatganj, Babatpur & Sultanpu
Fog is categorised as "very dense" when the visibility goes below 50 metres. On the other hand, if the visibility is between 51 to 200 metres, it is considered "dense" fog and "moderate" fog prevails when the visibility is between 201 and 500 meters.
Due to the thick fog, several flights in the Delhi Airport were delayed. The low visibility also delayed arrival and departure of several Delh-bound trains.
An INSAT (Indian National Satellite System) imagery released by the Met department on Thursday depicted fog hovering over the North India region.
The satellite image taken at 1430 hrs (IST), showed a fog layer continuing over Punjab, Haryana, extreme north Rajasthan, Uttar Pradesh, and north
UPSRTC officials said that buses should not operate in case of poor visibility due to fog. The corporation also advised operators to park buses at safe locations and wait until visibility improves.
The Delhi airport reported delays in flight operations affecting approximately 134 flights, both arrivals and departures (domestic and international), due to fog. As many as 22 trains were delayed at the New Delhi Railway Station as well, amid low visibility.
The India Meteorological Department (IMD) said on Tuesday that dense to very dense fog (visibility 50-200 meters) likely at some pockets over Uttar Pradesh during December 26 and 27.