Delhi Battles Cold Wave, 'Poor' AQI; North India Braces for 3°C Temp Drop, Fog Alerts

• Delhi continues to face cold wave conditions and 'poor' Air Quality Index (AQI), recorded at 286 on January 6, with 19 stations in 'very poor' category.
• The Indian Meteorological Department (IMD) forecasts a 2-3°C temperature drop across northwest India for four days and central/eastern parts for two days.
• Airlines like IndiGo and SpiceJet issued advisories for passengers due to low visibility and fog affecting flights in Delhi, Ranchi, Amritsar, Bhopal, Chandigarh, Guwahati, Varanasi, and Dharamshala.
• Dense to very dense fog is predicted across Punjab, Haryana, Chandigarh (till January 10), East MP, and Uttar Pradesh (till January 8).
• Dense fog is also expected in Rajasthan, Uttarakhand (till January 8), West UP (till January 9), Chhattisgarh, West Bengal, Odisha (till January 7), Himachal Pradesh (till January 10), and Bihar (till January 12).

Why It Matters: Cold wave and 'poor' AQI grip Delhi; North India expects colder weather and flight disruptions due to fog.