North India is experiencing a persistent cold wave, with day temperatures dropping across the region. Delhi recorded a maximum temperature of 17.3°C and a minimum of 7.4°C, with a cold wave forecast until January 6. Kashmir is under sub-zero temperatures, with forecasts of light rain or snow in higher reaches. Rajasthan faced moderate to dense fog, with Fatehpur recording the coldest minimum at 1.1°C. Delhi's air quality remains in the 'very poor' category.