Britain could enjoy the hottest July day for seven years tomorrow as forecasters predict temperatures to soar to up to 33 degrees in some areas.
Weather experts have predicted thermometers in London could show a blistering 32 degrees Celsius tomorrow, while much of the country will enjoy a day that sees mercury rising above 30.
The continued warm weather is expected to settle around the mid-20s well into next week, but not before 48 hours of potentially dangerous heat.
The Met Office yesterday gave a 60% chance of two successive days above 32C in London and 30C in the East, a temperature reading which would make this July the hottest recorded since 2006.
Public Health England have urged caution, issuing a Level 2 Heatwave Alert that warns of the likelihood of hazardous conditions.
Circulating the warning this morning, a statement said: "As most deaths occur in the first two days, this is an important stage at which to ensure readiness and swift action to reduce harm from a potential heatwave."
The body urged hospitals to prepare for a surge in demand and putting health and social care staff on standby to contact the ill and elderly.
Dr Angie Bone, Heatwave Plan lead for PHE, said: “While many people enjoy hot weather, high temperatures can be dangerous, especially for people who may be particularly vulnerable such as older people, young children and those with serious illnesses.
The head of first aid education at the British Red Cross, Joe Mulligan, added: “Most heat disorders occur because the victim has been over-exposed to heat or has over-exercised for his or her age and physical condition.
"Simple steps such as avoiding exposure to the hottest time of the day, drinking plenty of fluids and even simply wearing a hat on hot days can all make a real difference."
Tom Tobler, a forecaster with MeteoGroup, said tomorrow's blast of sun is likely to beat the current record of 29.7C for 2013 reached in Bournemouth on Sunday.
“It's certainly going to be a very hot weekend with lots of sunshine,” he said. “Temperatures are predicted to reach at least 31C on Saturday, which will make it the hottest day of the year so far.”
“Temperatures will drop a few degrees on Sunday into next week but we can't see any sign of the hot weather changing over the next week. It's been a very hot start to July, and it's likely to last a while longer, for the next one or two weeks.”
While the north has thus far seen the best weather over the last few days, the hit will start to spread south from today, leaving behind temperatures in the low 20s in Northern Ireland and Scotland. The heat could also lead to a few local thunder storms in the east of the country.