Fog during the early morning hours of Sunday in Bengaluru disrupted at least 52 flights at the city's Kempegowda International Airport.
"As a result of the fog, departure of 35 flights and the arrival of another 16 flights was delayed," the airport operator Bangalore International Airport Ltd (BIAL) said in a statement.
One flight was diverted to Hyderabad due to the fog-related disruption, the statement added.
A visibility standby issued at the airport at 4:45 am was withdrawn over four hours later at 9:04 am. A standby like this is declared when the visibility at the airport decreases to below 2,500 metres.
The departure and arrival delays continued through the day at the airport.
The tech hub's airport has an average of 300 departures and arrivals each on a daily basis.
The city recorded a maximum temperature of 28.8 degrees Celsius and a minimum of 14 degrees Celsius over the past 24 hours, according to the Bengaluru division of India Meteorological Department (IMD).
Dense fog has led to disruption in flights on several occasions this month.
On January 7, one Indigo flight from Delhi to Bengaluru was diverted and the departures of 41 flights were delayed due to conditions of fog. Prior to that, 38 flights were delayed due to fog on January 6.
In fact, conditions of fog caused delays at the Bengaluru International Airport on six of the first seven days of the year, as per airport authorities. This has inconvenienced thousands of passengers flying in and out of the airport, particularly in the morning.
This comes at a time when a cold wave is sweeping through the city with temperatures in parts of the city dropping to single digits, as per the Karnataka State Natural Disaster Monitoring Centre (KSNDMC).
Several airline companies took to social media to issue travel advisories to passengers in Bengaluru on Sunday, due to the weather conditions.