Launched today by the UK Health Security Agency (UKHSA) and the Met Office, the colour-coded 'Heat Health Alerting (HHA) system' will offer regional information and advice to Brits.
Families made the most of the sun by packing out Britain's beaches, as the Met Office said today was officially the hottest day of the year so far.
The Met Office says the settled dry and sunny spell is expected to last for at least the next ten days. Temperatures will remain 'generally above average' but not meet 'heatwave criteria'.
Parks and beaches were packed out with thousands of people as temperatures climbed to 20C (68F) kicking off a week of weather that could see the UK hotter than Ibiza.
Families are flocking to beaches along the south coast, many taking taking a dip in the sea and or going for a paddle. City-dwellers were seen laying out on picnic blankets in parks.
Revellers enjoyed the hottest day of the year so far yesterday in an excellent start to the final May bank holiday - as the mercury tipped 24C.
South-east Wales and areas around the Bristol Channel will see the hottest temperatures, which could beat the current 2023 record of 23.4C. Other areas can look forward to early 20s.
South-east Wales and areas around the Bristol Channel will see the hottest temperatures, which could beat the current 2023 record of 23.4C. Other areas can look forward to early 20s.
The Met Office has said a 'fine spell of weather' is expected over the Bank Holiday weekend. But as Britons bask in the sun, our pets are susceptible to dehydration, heatstroke and burnt paws.
The Met Office says the area of high-pressure which has brought good weather across the UK over the last few days will continue into the bank holiday weekend and next week.
According to the upbeat predictions, Sunday could even turn out to be the hottest day of the year so far, with a maximum of 24C (75F) expected, warmer than Athens.
Brits will be dusting off their barbecues across the country today as temperatures are set to soar - but the barmy weather has sparked deadly Asian hornets into a breeding frenzy.
The Met Office forecasts a mild day across most of the country, with dry conditions and sunny spells in Scotland and Northern Ireland.
Forecasters said today that while UK conditions will continue to be cool for at least the next five to ten days, there is now an increased chance of hot spells this summer.
Mother Joanne Collins-Anderson snapped the gigantic cumulonimbus from her home in Louth, Lincolnshire, as a thunderstorm raged across the town.
Extreme rainfall events are expected to become more common as the climate warms
Thousands of civil servants are set to go on strike today. Prospect union workers have been taking action short of a strike since mid-March, including working to rule and an overtime ban.
Flash flooding has been reported in southwest England as hailstorms batter the region with a deluge of rain and thunder.
The Met office issued a yellow weather warning, which will stay in place until 10pm this evening and spans much of southern England, East Anglia and parts of the Midlands.
Rain will clear in the east this morning, bringing spells of sunshine, but the skies will remain rather dull in the far northeast. Heavy showers will develop across the south and west today.
The military flypast over Buckingham Palace to mark the coronation of the King and Queen has been scaled down due to the weather and will now be formed of helicopters and The Red Arrows only.
