freezing day as the minimum temperature dropped to 4 degrees Celsius.
Several flights departing from the Indira Gandhi International (IGI) airport were delayed.
«My flight is more than two hours late due to the bad weather.
However, we cannot blame anyone. We cannot do anything about it,» a passenger told ANI.
Passengers were seen waiting at the New Delhi Railway Station (NDRS) as several trains got delayed amid poor visibility due to the fog.
«I am travelling to Kerala. My train, Kerala Express, is five hours late from the scheduled time,» a passenger told ANI.
Meanwhile, the Republic Day parade rehearsal took place at Kartavya Path.
As per the MeT department, fog is considered to be 'shallow' when the visibility stands up to 500 metres.
'Moderate' fog occurs when the visibility remains up to 200 metres.
As the visibility is up to 50 metres, the fog is categorised as 'dense'. It is categorised as 'very dense' when the visibility reaches below 50 metres.
Earlier on Monday, visibility was recorded as 'zero for the first time this winter season in Sri Ganganagar in Rajasthan, Patiala, Ambala, Chandigarh, Palam, Safdarjung (New Delhi), Bareilly, Lucknow, Bahraich, Varanasi, Prayagraj, and Tezpur, as per the weather department.
Meanwhile, people were seen sitting around bonfires as the city saw a thick blanket of fog.
«We sit around bonfires to protect ourselves from the cold weather.
There has been a constant rise in the temperature since the beginning of January,» a man named Rahimali told ANI.
Several people took refuge in government-run shelter homes to shield themselves from the freezing weather.
The night shelters in Delhi are aimed at providing a refuge to homeless people who live on the streets and have