Overview

• A UKHSA yellow heat-health alert is active from noon Monday to 6 pm Wednesday across London, the Midlands and the South East.
• Monday’s highs will top 30 °C and forecasters predict mid-30s Celsius temperatures in central, southern and eastern England on Tuesday.
• A high-pressure ridge combined with the remnants of Tropical Storm Dexter will draw warm Atlantic air northeastward into the UK.
• Most regions are set to meet the Met Office’s three-day heatwave criteria of consecutive maximums above 25–28 °C by Tuesday or Wednesday.
• Officials warn of significant strain on hospitals and care homes, a possible rise in heat-related deaths among older and vulnerable people, and the chance of isolated thunderstorms.