A yellow alert is the lowest behind amber and red on the UK Health Security Agency's (UKHSA) system, but warns of possible impacts on health and social services. The heat alerts are issued to give early warning to those services, as well as carers and government departments when hot weather is likely to impact on people's health and wellbeing.

Derbyshire residents have been urged to look out for vulnerable people amid rising temperatures – with a health warning being issued amid highs of 30° this weekend.

A rare amber heat-health alert has been issued for the whole of England, with officials warning soaring temperatures mean a ‘likely rise in deaths’ among vulnerable people. The UK Health Security Agency (UKHSA) has issued the amber heat-health alert for the entire country from 12pm Thursday to 9am Monday.