The 2026 FIFA World Cup could become one of the hottest and most climate-challenged tournaments in football history, according to a new scientific study that warned of dangerous heat exposure for players and fans across North America. The tournament will be hosted jointly by the United States, Canada, and Mexico.

Researchers from the World Weather Attribution (WWA) group found that nearly 25% of the tournament’s 104 matches may face heat conditions above the safety threshold recommended by global players’ union FIFPRO. The study said at least five matches could enter “cancellation-level” heat zones if temperatures and humidity spike during summer afternoons.

Scientists used the Wet Bulb Globe Temperature (WBGT) index to assess the risks. The index measures heat stress by combining temperature, humidity, solar radiation, and wind speed. FIFPRO recommends cooling measures when WBGT exceeds 26°C and postponement when it crosses 28°C.

Several host cities, including Miami, Philadelphia, Kansas City, and New Jersey, have open-air stadiums without full air-conditioning systems. Experts warned that players could suffer dehydration, fatigue, and heat stress during daytime fixtures. Fans may also face serious health risks while attending outdoor matches.

FIFA has announced mitigation plans. These include hydration breaks, cooling benches, revised kick-off timings, and additional medical support. However, climate scientists argued that these measures may not be enough if global temperatures continue to rise.

Climate change is now influencing global sports calendars, athlete safety, and fan experience. The 2026 FIFA World Cup may become a defining example of how rising temperatures are reshaping international sporting events.

Reference- FIFA website, BBC, Reuters, World Weather Attribution (WWA) group