New Delhi: At least 10 trains were delayed and several flights diverted due to a dense fog cover over the national capital causing visibility to remain at zero for a few hours on Friday morning.
According to the India Meteorological Department (IMD), the visibility in Palam area dropped to zero between 4:30am and 6:30am, and later remained less than 50 metres till 8:30am It only improved after 9:30am to 50 metres, the required range for an aircraft to land.
An Indira Gandhi International Airport (IGIA) official told IANS that due to the low visibility, flight operations were badly affected between 5am to 10am.
"At least five flights were diverted and departures were affected till 10am," he said.
Trains that were delayed due to the dense fog cover included the Puri-New Delhi Purushottam Express (by over six hours), Gaya-New Delhi Mahabodhi Express and Howrah-New Delhi Poorva Express which were both held-up by more than five hours.
The minimum temperature in Delhi on Friday was recorded at 4.8 degrees Celsius, two notches below the season's average, while the humidity level was 100 per cent.
The city will witness shallow to dense fog throughout the day, the Met said.
The air quality in Delhi and adjoining areas turned 'severe' as the amount of moisture in the air prevented dispersal of particulate matters PM2.5 and PM10.
The overall Air Quality Index (AQI) of Delhi was recorded at 411, according to Central Pollution Control Board (CPCB).
Thursday's maximum temperature settled at 22.2 degrees Celsius, two notches above the season's average while the minimum was recorded at 4.2 degrees Celsius, three notches below the season's average.
