The alert from the UK Health Security Agency (UKHSA) is in place from 9am on Tuesday, August 12, until 6pm on Wednesday, August 14.
The amber alert covers the East Midlands, West Midlands, East of England, London, and the South East.
The UKHSA said the alert follows an “enhanced hot weather response” warning that the heat could see significant impacts to health and social care services.
Amber heat health alert issued across England
The UKHSA shares that the amber alert sees a risk to a rise in deaths for those aged over 65 with health conditions, issues managing medicines, increased demand for power exceeding capacity and the heat affecting the ability of the workforce to deliver services.
You can see the full warning via the UKHSA website here.
It’s a hot start to the week for much of England and Wales with spells of sunshine, hazy at times 🌤️
Temperatures nearer average for Northern Ireland and Scotland with more cloud and some showers ☁️ pic.twitter.com/aPWyE2dHM1
— Met Office (@metoffice) August 11, 2025
Elsewhere, a yellow alert has been issued to cover the North East, North West, Yorkshire, The Humber, and the South West.
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Areas under the amber alert are set to see temperatures rise to more than 30°C, with London expecting highs of 33°C.
Sharing the forecast for this week, the Met Office says: “Isolated mist patches at first soon clearing, with temperatures rising quickly. This leads to a hot, sunny afternoon with light winds. Coasts are cooler with onshore breezes developing. Maximum temperature 30 °C.”
Adding that later in the week, the weather will remain hot: “Temperatures remaining above normal with some sunshine but also a risk of thundery showers. Muggy nights are likely. Winds generally light.”