temperatures will rise by another 10°C in much of the world England in the coming days, increasing the pressure on hospital and train services.
On average, the mercury stays in the mid-twenties on the last working day of the week, before rising to around 35C (95F) on Tuesday in the south, center and east of England.
Hospital and train services are already under pressure from the heat, with the NHS Facing a “rise” in demand for heat-related withdrawals, Avanti West Coast has warned that their services could be canceled at the last minute.
The With Office issued an “amber” warning of extreme heat for much of England and Wales from Sunday to Tuesday.
Tuesday is likely to be the hottest day, with the potential to surpass Britain’s record 38.7C (101.7F) temperature in Cambridge in 2019, forecasters say.
The warning says the weather could cause health problems for the entire population, not just those vulnerable to extreme heat, leading to potentially serious illness or death.
Friday will begin with outbreaks of showers moving south-east across the northern and central parts of the UK.
Meanwhile, people in the South and Southwest can expect warm sunshine.
London is forecast to experience 26C on Friday while 23C is forecast for Cardiff, 20C in Belfast and 19C in Edinburgh.
Saturday also starts with cloudy skies and scattered showers in northern areas, before turning dry across the country as extreme heat rolls in.
At the height of the heat wave on Tuesday, 36C is forecast in the capital, 28C in Cardiff, 26C in Belfast and 25C in Edinburgh.
Cabinet Minister Kit Malthouse has said that the Government prepares for a “rise” in demand for the NHS and other services as a result of the expected heat wave.
After chairing a meeting of the Cobra Civilian Emergencies Committee in Whitehall, Mr Malthouse urged the public to watch out for people who were particularly vulnerable in the heat.
Avanti West Coast has warned passengers wishing to use services between London Euston and Scotland to plan ahead due to the impact of the heat on the railway lines.
The company said weekend services may be canceled at short notice, while travel on Mondays and Tuesdays is subject to schedule changes.