North India is experiencing a cold wave, prompting the India Meteorological Department (IMD) to issue a red alert for Haryana, Chandigarh, and Punjab. Yellow alerts are in effect for several other northern and central states, including Himachal Pradesh, Uttarakhand, and Madhya Pradesh. Dense fog is anticipated in numerous regions, potentially impacting visibility and traffic, particularly in the national capital, Delhi, where temperatures are expected to remain low with clear skies and morning fog.