Guwahati, June 12 -- As the relentless heatwave tightens its grip on northern India, the India Meteorological Department (IMD) has issued a red alert for Delhi, warning of extremely high temperatures over the next couple of days. Parts of the national capital have already recorded a scorching 45.5degC, with little relief expected until June 13 night or June 14, when a western disturbance may bring some light rainfall, according to the IMD.

Jalandhar in Punjab has emerged as the hottest city in India so far this June, registering a searing 48degC, based on data from AQI India. Several other cities in northern India are trailing closely behind, with temperatures hovering around 47degC.

India currently dominates the global heat charts, acc...