London's pavements have reached scorching temperatures of up to 57C during Wednesday's heatwave, posing a significant risk to public health. While air temperatures in the capital hovered around 35C, thermal imaging technology revealed that ground surfaces are often significantly hotter, sparking concerns among experts and authorities.
The imaging data showed alarming readings across various London locations, with a children's playground in Islington recording a black rubber floor temperature of 53C at 5pm. The tarmac at roadworks in Holborn hit a staggering 65C, while ground surfaces in Piccadilly Circus were recorded at 56C.
Professor Anna Mavrogianni from University College London's sustainable built environments department warned that these images highlight the need to reassess heat exposure levels in public areas. She urged city planners to 'embed climate resilience in urban design' by incorporating green spaces, water features, reflective materials, and adequate shading to future-proof London against rising temperatures.
The Mayor of London's office has reaffirmed its commitment to increasing urban greening and shade through the 'Heat Ready London' action plan. Since Sir Sadiq Khan took office, over 640,000 trees have been planted across the capital, contributing to cooler surroundings and providing essential green spaces. The Mayor's website features a map of 'cool spaces' where residents can seek respite from the sun.
Local authorities are also taking action, with Barking and Dagenham Council advising park users to check equipment for excessive heat before allowing children to use it. The British Veterinary Association has cautioned dog owners against walking their pets during the hottest part of the day, recommending the 'five-second tarmac test' as a guide.
The Met Office's heat-related warnings have been issued across the UK this week, with forecasters predicting more extreme temperatures in the coming days.