Ben Hurst

High temperatures exceeding 34–35°C prompted health alerts across parts of the UK, with experts warning that electric fans can worsen heat stress once indoor temperatures surpass 35°C. The UK Health Security Agency advised avoiding fan use at these levels due to potential dehydration and heat absorption. Specialists explained that fans cool the body only when air temperatures remain below skin temperature and that older adults are more vulnerable due to reduced sweating efficiency. Record heat levels for 2026 were confirmed by the Met Office, reinforcing concerns around health impacts and the need for protective measures.

A heatwave with temperatures expected to reach 36C has triggered amber and yellow health alerts across much of the UK, prompting warnings of increased health risks and pressure on services. BBC doctor Oscar Duke advised avoiding outdoor activity between 11am and 3pm and highlighted cardiovascular and kidney risks caused by extreme heat and humidity. Authorities warned of heightened wildfire danger due to hot, dry conditions, with the National Fire Chiefs Council urging the public to avoid disposable barbecues and other potential fire hazards as temperatures peak later in the week.