The UK Health Security Agency (HSA) announced the weather health warning today (June 17), advising that the alerts will be in place between 12pm on June 18 and 6pm on June 22.
According to the agency, the hot temperatures over the coming days have resulted in a risk score of ten being calculated for the yellow alert.
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A yellow heat health warning with a risk score of ten indicates a low likelihood of potential medium impact.
Forecasts by the Met Office have revealed that temperatures are set to reach as high as 29 degrees Celsius in London later this week.
The UK HSA has warned that the hot weather could bring with it a rise in deaths, particularly among those aged 65 and over, a higher demand for health services and more.