Scientific warnings regarding heat risks for the 2026 World Cup

Researchers have warned that 25% of the 104 matches at the 2026 World Cup, hosted by the USA, Canada, and Mexico from June 11 to July 19, may take place under extreme heat conditions. Analysis from World Weather Attribution (WWA) suggests the risk of heatwaves has doubled since the 1994 tournament due to climate change. Experts utilize the Wet Bulb Globe Temperature (WBGT) index to assess human safety, noting that levels above 26 degrees Celsius require hydration breaks, while levels above 28 degrees, expected in about five games, may necessitate match postponements according to FIFPRO. High-risk locations identified include Miami, Kansas City, and New York/New Jersey, the latter of which will host the final on July 19. Scientists estimate a 12.5% chance that the final will occur in conditions challenging for human cooling, and a 3% chance of conditions being dangerous for play. FIFPRO and UN climate chief Simon Stiell have called for urgent action to protect players and fans. Concerns also persist regarding spectator safety outside air-conditioned stadiums in cities like Dallas and Houston.