It is rare to have heat health alerts in May, but many areas will be very hot.

The Midlands and some other areas have an Amber alert, which means it will be very hot. Other areas have a Yellow warning. The alerts will last until May 28. The UK Health Security Agency says this is very unusual for this time of year.

Heat health alerts usually happen between June and September. But some areas may reach 33 degrees on Monday, which would be the hottest May day ever in the UK.

The heat health alerts tell health services to prepare for more patients, especially older people. A heatwave happens when temperatures are high for more than three days.

Some health risks of a heatwave are dehydration, heat exhaustion, and heatstroke.

The UK Health Security Agency issues heat health alerts to warn the NHS and other services about health risks. The alerts use a color system to show how severe the risk is.

In areas with an Amber alert, rail companies are warning passengers to be prepared. They should bring water and not travel if they feel unwell.

Public transport can be affected by heatwaves.

Train journeys may take longer, and passengers should check for delays. Some services will be busier than usual.

The UK Health Security Agency says this level of heat health alerts is unusual. They warn that vulnerable people are at risk, and doctors will prepare for heat-related illnesses.

Young children and older people should avoid going outside when it is hottest. They should also stay out of the sun between 11am and 3pm.

To stay safe, people should use sunscreen, drink water, and stay in the shade. They should also wear light clothing and keep their homes cool.