Thick fog blankets Delhi-NCR as cold wave tightens grip, flights delayed Delhi-NCR faced a harsh winter morning with dense fog and hazardous air quality leading to severe visibility issues and flight disruptions. Authorities have imposed strict pollution control measures as residents brace for continued cold and smog. AdvertisementNorth India faces severe cold waves and dense fog. (Photo: AP)India Today News DeskNew Delhi,UPDATED: Jan 17, 2026 07:40 ISTEdited By: Sonali VermaA toxic mix of dense fog, biting cold and hazardous air quality engulfed Delhi-NCR on a bitter Saturday morning, pushing visibility to critically low levels, delaying flights and worsening pollution across the region.