The India Meteorological Department (IMD) has forecast heavy rainfall at isolated places over Tamil Nadu, Puducherry, and Karaikal today. According to the IMD, Coastal Andhra Pradesh, Yanam, and Rayalaseema are expected to witness heavy rainfall tomorrow. The weather agency said that dense to very dense fog conditions are very likely to prevail in the night and morning hours in isolated pockets of west Punjab and northwest Rajasthan during the next 2 days. The Met Department said Delhi and NCR can experience smog and shallow fog during the night and morning hours during the next 2-3 days. The IMD estimated there will be no significant change in minimum temperature over the country during the next 2-3 days.