90 trains delayed, flights affected as dense fog drops visibility in Delhi
Though Regional Weather Forecasting Centre (RWFC) officials had expected the dense fog to subside starting Sunday, the fog still persists.
Early morning fog engulfed Delhi once again and threw train schedules into disarray even as the Regional Weather Forecasting Centre (RWFC) expected the dense fog to subside from Sunday.

Visibility had dropped to 50 metres at 5:30 am, and was recorded at 300 metres at 8:30 am. Though few domestic flights have been delayed at the Indira Gandhi International Airport (IGIA), officials maintain that flight operations have not been drastically affected.
Flights are usually affected when visibility drops below 200 metres.
But the fog hit rails services. According to reports, the arrival of 90 trains in Delhi were delayed on Sunday, 28 were rescheduled and 4 others were cancelled due to the fog.
A scientist at the RWFC had earlier said that with climatic conditions that were expected to bring westerly winds starting Sunday.

“Of course there will be fog, it will not completely go away. But the intensity of the fog will reduce, and it will especially get better on December 13 and 14 (Tuesday and Wednesday),” said the scientist.