North India, particularly Delhi, Rajasthan, Punjab, Haryana, and Uttar Pradesh, will endure a severe heatwave until May 21, according to the India Meteorological Department (IMD). Delhi is expected to experience extreme heat on Sunday, with temperatures reaching 44 degrees Celsius and a red alert issued for the city. The IMD has also issued an orange alert for several other states and a yellow alert for Madhya Pradesh, Jharkhand, and Odisha, warning of heatwave-like conditions.