Ahead of the extreme weather and temperatures we’ve looked at the hour-by-hour forecast so you can get ready for the heat. (PA/Met Office)

The Met Office has issued its first red extreme heat weather warning across England ahead of scorching temperatures on Monday and Tuesday.

London is covered by the red weather warning as the national forecaster warns of an “exceptional hot spell on Monday and Tuesday leading to widespread impacts on people and infrastructure.”

Ahead of the extreme weather and temperatures we’ve looked at the hour-by-hour forecast so you can get ready for the heat.

Alert levels. (PA)

London forecast hour-by-hour for Saturday:

  • 7am-16c
  • 10am-19c
  • 13pm-23c
  • 15pm- 25c
  • 18pm-26c
  • 20pm-24c
  • 22pm-22c

What is a red severe weather warning?

The Met Office issued a red weather warning when “dangerous weather is expected”.

When a red weather warning is issued you should take action now to keep yourself and others safe from the impact of the severe weather, if you haven’t already done so.

Cabinet Office minister Kit Malthouse has said the Government is preparing for a “surge” in demand on the NHS and other services due to the expected heatwave.

After chairing a meeting of the Cobra civil contingencies committee in Whitehall, Mr Malthouse urged the public to look out for people who were particularly vulnerable in the heat.