Six flights were diverted, more than 300 flights delayed and departures were briefly put on hold at the Delhi airport early morning on Wednesday as low visibility conditions due to dense fog significantly impacted operations.

Dense fog and cold weather delayed train and flight departures in several parts of northern India, including its capital New Delhi, on Wednesday. India's weather office issued an orange alert for Delhi,

Delhi airport advised passengers to stay updated on schedules by coordinating with airlines to avoid disruptions. The IMD said cloudy skies are expected throughout the day, with light rain or drizzle likely in some areas.

NCR, including Ghaziabad and Noida, had close to zero or complete zero visibility amid the dense fog on Wednesday.