India, Dec. 30 -- Thick fog across the region early on Monday led to a significant drop in the visibility - 50 metres at both Safdarjung and Palam stations - thereby impacting both flight and train operations in the Capital. Over 550 flights were delayed, at least 130 cancelled and eight diverted at Delhi's Indira Gandhi International (IGI) airport on Monday.

The India Meteorological Department (IMD) has issued a red alert for Delhi for December 30, forecasting dense to very dense fog in many places, while a yellow alert is in place for moderate to dense fog on December 31.

Dense to very dense fog is also expected in Punjab, Haryana, Chandigarh and west Uttar Pradesh during the same period - continuing to disrupt travel plans with more ...