Researchers have recorded temperatures as high as 42 Celsius in London Underground stations amid rising global heat. Jonathan Paul, a scientist at Royal Holloway, University of London, measures these conditions using a thermometer-equipped smartphone. Underground commuters face stifling heat with no easy escape.
Jonathan Paul, a researcher at Royal Holloway, University of London, has documented the highest temperature in a London Tube station at about 42 Celsius, equivalent to 107.6 Fahrenheit. He uses his smartphone equipped with a thermometer to take such readings. This level of heat is extreme enough to drive people toward air-conditioned spaces on the surface, but underground, passengers are trapped in stifling tunnels amid screeching trains. As global temperatures rise, subways and trains worldwide are becoming increasingly unendurable, highlighting challenges in public transportation systems like London's Underground.