When will the Basingstoke heatwave end? Hour-by-hour forecast

The warning, which covers a large part of England and Wales, will be in effect from 9am on Wednesday, June 24, to 9pm on Thursday, June 25.

The extreme heat is expected to affect the health of the population, not just those vulnerable to high temperatures.

The Met Office has warned that the heat could lead to illness and life-threatening situations.

There is also a high risk of power, water, and electricity loss.

People are advised to drink plenty of fluids, stay out of the sun if possible, and avoid any exercise between 11am and 3pm.

The Met Office has said that maximum temperatures in the shade could exceed 37C, possibly rising to 38C or 40C in some places.

Delays on the roads are expected, as well as rail and air travel cancellations on Wednesday and Thursday.

The hourly weather forecast for Wednesday, June 24, is as follows:

12pm – 33C, 7mph wind gusts

1pm – 34C, 7mph wind gusts

2pm – 35C, 6mph wind gusts

3pm – 36C, 6mph wind gusts

4pm – 36C, 6mph wind gusts

5pm – 36C, 6mph wind gusts

6pm – 36C, 7mph wind gusts

7pm – 35C, 8mph wind gusts

8pm – 33C, 9mph wind gusts

9pm – 31C, 9mph wind gusts

10pm – 28C, 8mph wind gusts

11pm – 27C, 8mph wind gusts

Midnight – 25C, 8mph wind gusts

The hourly weather forecast for Thursday, June 25, is as follows:

1am – 24C, 8mph wind gusts

2am – 23C, 7mph wind gusts

3am – 22C, 7mph wind gusts

4am – 21C, 7mph wind gusts

5am – 20C, 7mph wind gusts

6am – 20C, 7mph wind gusts

7am – 22C, 8mph wind gusts

8am – 24C, 9mph wind gusts

9am – 26C, 10mph wind gusts

10am – 28C, 11mph wind gusts

11am – 31C, 12mph wind gusts

12pm – 33C, 13mph wind gusts

1pm – 35C, 13mph wind gusts

2pm – 36C, 13mph wind gusts

3pm – 37C, 13mph wind gusts

4pm – 37C, 13mph wind gusts

5pm – 37C, 13mph wind gusts

6pm – 36C, 13mph wind gusts

7pm – 34C, 13mph wind gusts

8pm – 32C, 10 per cent chance of rainfall, 11mph wind gusts

9pm – 29C, 10 per cent chance of rainfall, 9mph wind gusts

10pm – 27C, 10 per cent chance of rainfall, 8mph wind gusts

11pm – 26C, 10 per cent chance of rainfall, 6mph wind gusts

Midnight – 25C, 30 per cent chance of rainfall, 6mph wind gusts