THE Met Office has extended an Amber "extreme" heatwave warning through the weekend as the sizzling 35C summer scorcher continues.
Brits are being warned of "adverse health effects" from the heatwave set to stay until at least next Monday.
Temperatures could exceed 35C in the southeast and 32C over much of England and persist into next week, with the Met considering another Amber warning extension in the coming days.
Britain has basked in sweltering temps this week, leading the UK's Health Security Agency Heat Health Alert to reach Level 3 - which means that temperatures are likely to have a high impact on public life.
And the mercury is expected to peak in the low 30s - across much of the southeast while other parts of England cooler weather.
Chillier conditions will have spread to Scotland, Northern Ireland and the north of England along with some showers in the northwest.
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Warm summer conditions will remain in place for much of the week for the majority of England and Wales, albeit slightly less hot on Wednesday and Thursday, when temperatures are more likely to peak in the high 20s Celsius.
Met Office Deputy Chief Meteorologist Rebekah Sherwin said: “Today, temperatures are likely to peak at 31°C in the southeast, with warm weather likely to continue throughout this week and it looks likely to ramp up late this week and into early next week.
“From Sunday and into Monday, temperatures are likely to be in excess of 35°C in the southeast, although the details still remain uncertain.
"Elsewhere, temperatures could be fairly widely above 32°C in England and Wales, and in the mid-to-high 20s Celsius further north."
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Dr Agostinho Sousa, Head of Extreme Events and Health Protection at UKHSA, said: "Heat-health alerts have now been issued to the majority of the country, with temperatures set to remain consistently high throughout the duration of this week.
"Most of us can enjoy the hot weather when it arrives, but it is important to keep yourself hydrated and to find shade where possible when UV rays are strongest, between 11am and 3pm.
"If you have vulnerable family, friends and neighbours, make sure they are aware of how they can keep themselves protected from the warm weather.’"
It comes as the mercury soared to a whopping 32C on Monday in Northolt, West London, the Met Office revealed.
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The sweltering weather dwarfed the temperature in tropical Hawaii, which experienced a high of 29C yesterday.
The UK's record high for 2022 currently stands at 32.7C, recorded at Heathrow on June 17.