Delhi experienced a cold New Year's Day with temperatures below normal and a 'very poor' air quality index (AQI) of 371. The India Meteorological Department (IMD) forecast cold wave conditions from January 2-5, accompanied by dense fog expected to persist until January 6. Wednesday marked Delhi's coldest December day in six years, with a maximum temperature of 14.2°C. Light rain and drizzle were reported in isolated areas. Flight operations were impacted due to low visibility.