Sweaty, shirtless football players lying on the pitch have seldom raised eyebrows as they did last week when photographs of European players struggling to train in the heat sparked concerns over sweltering US summer temperatures at the World Cup.Scientists have long cautioned that extreme heat could disrupt sporting events. Last month, climate experts warned that one in four World Cup games could be played in very hot conditions, affecting fans and players alike.Recommended Stories list of 4 itemsend of listThose warnings materialised last week; social media was abuzz with sunburnt players — mostly from European teams used to cooler climates — dousing themselves with water to cool off. Norway’s team even opted to wear ice collars around their necks during the friendly against Morocco.But England captain Harry Kane quickly dismissed speculation over how much the heat would affect players, saying it “won’t be a factor”, thanks to his team’s World Cup training regimen.So, how much will higher temperatures actually affect players at the World Cup? Al Jazeera takes a look.What have experts said about heat during World Cup matches?Th 2026 World Cup could be the hottest on record since the tournament began in 1930 due to a sharp rise in global temperatures, explained Al Jazeera weather presenter Everton Fox.“Around half a dozen of the venues are prone to extreme heat; places like Dallas, Houston, Miami and the Mexican venues are all likely to swelter,” Fox said.Daytime temperatures there are expected to average 28C, though the stadiums in Dallas, Houston and Atlanta hav …
