London, Oct 24:
Europe’s record-breaking summer heat is estimated to have caused 50,391 heat-related deaths in urban areas during June, July and August 2026, with human-induced climate change accounting for nearly two-thirds of the toll, according to a new study by researchers from Imperial College London and the London School of Hygiene and Tropical Medicine. The findings, published in Nature Health, make this the deadliest summer for heat-related mortality in the areas studied since 2000.
The researchers analysed temperatures and estimated mortality across 854 urban areas in 30 European countries, covering approximately 40 per cent of their combined population. Of the estimated deaths, 32,619 were attributed to the additional warming caused by human activities, particularly the burning of fossil fuels. The toll was around 71 per cent higher than the estimated 29,480 heat-related deaths recorded during the summer of 2022. Nearly one-third of the deaths occurred during an intense heatwave between June 17 and July 1, when temperatures averaged about 5.3 degrees Celsius above normal. Italy recorded the highest estimated toll, followed by France, Spain and Germany.
People aged 85 and above accounted for more than half of the estimated deaths, although younger people were also affected. Researchers cautioned that the figures may underestimate the actual impact, as the analysis covered only selected urban areas and excluded a deadly heatwave in May. They called for stronger heat-warning systems, improved healthcare preparedness, more green spaces and wider access to cooling facilities, particularly for vulnerable communities. The findings also underline the need to reduce greenhouse gas emissions, as rising temperatures increasingly threaten public health across Europe.