Cold wave wreaks havoc in North India: Snowfall in Himachal Pradesh, mercury drops to 1.1 degrees Celsius in Punjab; Delhi on yellow alert

Double impact of fog and rain: IndiGo issues travel advisory, flights including Jammu affected

Fog wreaks havoc: flights denied landing permission at Amritsar airport, forced to turn back; several flights cancelled

Triple attack of cold, fog and pollution in Delhi-NCR, AQI crosses 400 in many areas

Buses to be halted if visibility drops below 50 metres, UP Transport Department takes major step amid dense fog

Thick fog engulfs Delhi-NCR, disrupting flight, train operations amid poor air quality

Dense fog in Delhi-NCR parts, train services disrupted

IMD Alerts North India: Dense Fog to Persist Over Delhi, UP, Haryana, Punjab

Amritsar: Vehicles move through dense smog on a foggy winter morning

150 flights, 26 trains delayed as dense fog blankets Delhi-NCR reducing visibility

Delhi engulfed in dense fog; flights, trains experience continued delays

Over 400 Flights Hit by Delays at Delhi Airport: IMD Flags Dense Fog Alert