New Delhi. The bone-chilling cold in the national capital Delhi has badly affected daily life. The dense fog has further increased the trouble. On Saturday, it felt as if Delhi has come to the kingdom of Tamraj Kilvish. The densest fog of this season fell in Delhi and surrounding areas. There was zero visibility for 9 consecutive hours. This was the longest period of zero visibility in this season. The Meteorological Department (IMD) said that visibility remained zero for 9 hours. The situation became like the proverb that one cannot see one's hand. Along with air traffic, the movement of trains was also badly affected. Vehicles were forced to crawl on the roads.

IMD said that for the first time in this season, fog prevailed for such a long time. According to officials, 81 trains were delayed on Saturday due to dense fog, while 15 flights had to be diverted. Visibility was zero for 9 hours from 6 pm to 3 am in Palam. This is the longest period of fog in this season. According to IMD, Delhi's primary weather station Safdarjung recorded zero visibility for 8 hours. Meteorologists said that the maximum temperature in Delhi was recorded at 20 degrees Celsius, which is just 0.7 degrees more than the normal temperature of this season. The minimum temperature in Delhi was recorded at 7.8 degrees Celsius, 0.9 degrees more than normal.

Cloudy sky on Sunday, dense fog in the morning
The Meteorological Department said that Delhi is likely to be partly cloudy on Sunday and winds are likely to blow from the south-east at a speed of less than four kmph in the morning. The IMD said that haze and moderate fog are likely to prevail in most areas of Delhi, while dense fog is expected in the morning at some places. The Meteorological Department said that haze or light to moderate fog is likely to prevail during the evening and night. The maximum and minimum temperatures in Delhi are likely to be around 18 and 10 degrees Celsius respectively on Sunday.

Visibility zero at IGI
At 7 am, the general visibility was zero due to very dense fog at Indira Gandhi International Airport (IGI Airport). The runway visual range (RVR) on the air strip was between 100-250 meters. The Meteorological Department said that zero visibility, dense fog and CAT-3 conditions have been prevailing at the airport since 11:30 pm on Friday night. DIAL said that landing and take-off at Delhi Airport is continuing, but flights which are not CAT-3 compliant may be affected. Let us tell you that CAT-3 facility allows aircraft operation even in low visibility conditions. Movement of trains has also been affected due to dense fog. North Railway said that a total of 59 trains are running late by up to 6 hours from their scheduled time, while 22 trains are running late by about 8 hours.

AQI 378
The AQI in the national capital has been recorded in the very poor category. According to the data of the Central Pollution Control Board, the 24-hour average AQI of Delhi was recorded at 378. Let us tell you that AQI is considered good between zero to 50, satisfactory between 51 to 100, moderate between 101 to 200, poor between 201 to 300, very poor between 301 to 400 and severe between 401 to 500.