Super El Niño Could Cause 451,000 Heat…Super El Niño Could Cause 451,000 Heat Deaths

Climate Impact Lab researchers project about 451,000 excess heat deaths worldwide from June 2026 through February 2027, as a powerful El Niño raises temperatures. The estimate is intended to help governments target measures such as heat warnings, cooling centers, medical staffing and outdoor-worker protections. Regional estimates and the event’s eventual severity remain uncertain, while human-driven warming raises the baseline on which El Niño’s effects occur.