Extreme cold temperatures and foggy conditions affect your heart health in many significant ways. In cold weather, your body naturally works to conserve heat, causing blood vessels to constrict and putting additional strain on your heart.

A thick layer of fog engulfed parts of Kashmir on Sunday as the valley braces for widespread snowfall and rainfall in some regions. The fog affected air traffic to and from the valley as poor visibility hit flight operations at the Srinagar airport.

The neighbouring capital, Delhi, also bore the brunt of the dense fog, which wreaked havoc on flight operations. Between 12:15 am and 1:30 am, 15 flights were diverted from Delhi airport due to poor visibility, marking the second consecutive day of disruptions. India's largest airline, IndiGo, temporarily suspended both arrivals and departures.

Delhi covered in fog causing travel disruptions, cold waves, and poor air quality; homeless seek refuge in shelters.

The air quality in the national capital continued in the 'very poor' category with 377 AQI in Delhi today at 6 am.

Dense fog reduced visibility to zero in various parts of the city. (PTI) A dense fog blanketed Delhi on Sunday morning, causing significant disruptions to flight and train services in the city. The capital also experienced cold waves,

The city experienced cold wave conditions as minimum temperatures dipped to 10 degrees Celsius at 5:30 am on Sunday morning.