Overview
- A multi‑institution analysis by Imperial College London, the UK Met Office and the London School of Hygiene and Tropical Medicine estimates about 2,700 deaths in England and Wales linked to two heatwaves in May and June.
- The study attributes roughly 550 deaths to the May 21–29 event and nearly 2,200 deaths to the June 18–28 event based on weather data, climate models and excess‑mortality research.
- Authors report that a persistent high‑pressure 'heat dome' made daytime maxima about 3–4°C higher than they would have been without human‑caused warming, and monthly temperature records reached about 35.1°C in May and 37.7°C in June.
- The UK Health Security Agency has said it will publish an official death‑toll estimate from death records in the coming weeks while cities in North America respond to ongoing extreme heat with cooling centres, heat alerts and air‑quality warnings.
- Officials warn the concurrent heat, wildfire smoke and strain on health services and utilities illustrate gaps in readiness and underscore the need for both short‑term heat‑health measures and longer‑term adaptation and emissions reductions.