Overview
- The UK has recorded provisional June highs of around 36.7C to 36.9C as a stalled heat‑dome produces consecutive hot days and warm nights across western Europe.
- The London Ambulance Service, which reported its busiest life‑threatening day on Wednesday, said category‑one calls rose about 50 percent and cardiac arrests increased roughly 30 percent compared with a typical June Wednesday.
- Ambulance chiefs and NHS leaders have warned England fans to drink water, pace alcohol and avoid strenuous activity before the late kick‑off to reduce dehydration, fainting and avoidable 999 demand.
- Several NHS trusts have declared critical incidents and cancelled elective care as hospitals face rising admissions, and Paris authorities temporarily banned evening public and takeaway alcohol sales after hospitals reported saturation.
- Health experts say the combination of prolonged heat, tropical nights and alcohol raises dehydration and heat‑illness risk, and services urge use of NHS 111 and local pharmacies for non‑urgent problems to protect 999 capacity.