Heat wave to continue across northern, central India for four days, temperatures likely to touch 45 degrees Celsius

The current heat wave condition is expected to continue across northwest and central India over the next four days and temperatures could soar to 45 degrees Celsius in Delhi by Sunday, the India Meteorological Department (IMD) has warned.

The Met department declares a heat wave when the temperature during the day shoots up by at least five degrees above the normal. It says the temperature shoots beyond 40 degrees in the plains and 30 degrees in the hills.