NOIDA, April 8 -- The India Meteorological Department (IMD) on Monday issued a yellow warning for a heatwave across Delhi-NCR, including Gautam Budh Nagar, as maximum temperatures touched 40.2degC - marking the season's first major heatwave.

Gautam Budh Nagar recorded a minimum temperature of 20.2degC on Monday. According to the IMD, no immediate relief is expected, prompting health officials in Noida and Greater Noida to urge residents to take precautions against heat-related illnesses such as dehydration, sunstroke, and fatigue.

"This is the season's first heatwave, and it's arrived slightly earlier than usual," said Mahesh Palawat, vice president, meteorology and climate change at Skymet Weather.

"Heatwave conditions are likely to p...