Delhi's air quality dipped to 'poor' category on Sunday, with the AQI reaching 246 amidst a cold wave. Temperatures plummeted to 6 degrees Celsius, prompting many to seek refuge in shelters. Several areas recorded AQI above 250, including Anand Vihar, Bawana, and Mundka. Shelter homes provided beds, blankets, and meals to those in need, with medical assistance also available.