The Delhi airport officials issued new guidelines and said that passengers are requested to contact the airline concerned for updated flight operations.
However, the arrival of two dozen passenger trains to the national capital was delayed by up to 6 hours or more, and several flights were also very late due to poor visibility conditions.
Meanwhile, several states are also grappling with the problem of low visibility due to dense fog, especially in the morning and night hours, which has led to the delay of several flights and express trains.