00:52 Temperatures Hitting Record Highs in Europe Temperatures are skyrocketing in Europe.

At a Glance Britain is in the midst of one of its hottest stretches on record, and Friday could set records.

The heat caused 5-hour delays for passengers on the Eurotunnel.

Hospitals without air conditioning are feeling the strain.

Residents in Britain have been suffering under a sizzling heat wave that has brought excruciating temperatures and several daily heat records, and it's expected to worsen on what some local newspapers have dubbed "Furnace Friday."

Temperatures reached 95 degrees Fahrenheit Thursday at London's Heathrow Airport, breaking this year's this year's record of 94.1 degrees Fahrenheit, set June 21. Friday is expected to be even hotter, with temperatures expected to topple all-time records in places like London.

The warmest temperature ever set in July in the United Kingdom is 98 degrees , and the all-time record for any month for London is 100 degrees. The all-time record high for the United Kingdom is 101.3 degrees.

Southeastern England will be particularly vulnerable on Friday, said weather.com meteorologist Jonathan Belles .

(MORE: United Kingdom Forecast )

"London's heat island will also make it hard to escape the heat in Europe's third-largest city, where temperatures will only fall into the low to mid-70s overnight," Belles added. "Temperatures like that are usually seen in the afternoons this time of year."

Heat islands typically trap or enhance heat in city centers or in locations that are darker in color or void of foliage like near an airport. They often run several degrees warmer than surrounding suburbs and the countryside. They also do not cool off at night, which makes city life more susceptible to heat exhaustion.

<img class="styles__noscript__2rw2y" src="https://dsx.weather.com/util/image/w/eurotunnel.jpg?v=at&w=485&h=273&api=7db9fe61-7414-47b5-9871-e17d87b8b6a0" srcset="https://dsx.weather.com/util/image/w/eurotunnel.jpg?v=at&w=485&h=273&api=7db9fe61-7414-47b5-9871-e17d87b8b6a0 400w, https://dsx.weather.com/util/image/w/eurotunnel.jpg?v=ap&w=980&h=551&api=7db9fe61-7414-47b5-9871-e17d87b8b6a0 800w" > Cars at a standstill as they queue for the Eurotunnel in Folkestone, southern England, as some miles of traffic wait to make their way to the cross-Channel services, with warnings of delays up to five hours, Thursday, July 26, 2018. (Gareth Fuller/PA via AP) (Gareth Fuller/PA via AP)

(MORE: Is This Week's Deadly Weather Linked to Climate Change? )

Hundreds of Eurotunnel passengers faced five-hour delays Thursday when the heat knocked out air conditioning in numerous rail cars , according to the BBC. The company expects the delays to continue into Friday and suggests passengers consider canceling trips.

Area hospitals without air conditioning became strained under the sweltering conditions, the Associated Press reported. Nurses at the Royal College of Nursing said high temperatures were leaving them dizzy and exhausted.

"Nurses are now becoming patients themselves due to the heat," said Kim Sunley, a union representative. One nurse reportedly wound up in the emergency room with dehydration.

Cars are becoming stranded on roadways, the RAC, which offers roadside assistance, told the AP, adding that there has been a 15 percent rise in the number of vehicle breakdowns.

"It is very hazardous from a driver's point of view. Our roads are in a pretty bad state anyway due to years of underinvestment and this is the last thing they need," RAC spokesman Simon Williams said. "The newly laid roads are especially at risk of melting."

The UK isn't alone in the heat either.

Much of northern Europe – from northern France and the Netherlands into Scandinavia – are set to experience well above average temperatures through the end of the week.

The heat, at least in the United Kingdom, will come to a screeching halt by late Friday or on Saturday. A cold front will swing across the British Isles from west to east with thunderstorms, some of which will be severe.