On the first day of 2018, Delhi airport experienced 270 flight delays, 50 diversion and 35 cancellations due to dense fog that enveloped the city.

The waiting hall and the area near the boarding gates at Terminal 1 was packed with people sitting on the floor and staircases waiting for announcements on their delayed flights.

There was chaos at the airport for elevators, staircases and the escalator to the departure hall as soon the announcement for boarding was made.

Passengers were seen visibly upset with airlines staff at counters about the lack of clear information

Train services were also adversely affection in Delhi and several other parts of north India, with about 64 trains  delayed, 21 cancelled and 24 rescheduled.

The effect of the fog caused delays in flights and train services today as well, with six flights being cancelled and over 60 flights being delayed due to fog at the Indira Gandhi International Airport.

Departures require a visibility of at least 125 metres. Planes can land in visibility below 50 metres only if the pilots are trained in CAT IIIB (a system of advanced technology for low-visibility landings that allows aircraft qualified to land in visibility of 25-50 metres).

The levels of pollution are in the “Very Poor” category, according to SAFAR (System of Air Quality and Weather Forecasting And Research).