Reacción a "The heat at the World Cup in North America will exceed safe playing conditions for several matches"

The research examines the issue of heat stress at the 2026 World Cup in North America to determine the potential for environmental conditions to influence player health and performance, as well as the heat stress risk to fans. It also compares historical data from the previous World Cup hosted in the USA in 1994 to identify if climate change has exacerbated heat stress risk over that time.  

The statistical approaches used are contemporary. One caveat in the modelling of wet-bulb globe temperature (WBGT) is the omission of black globe temperature, or radiant heat when exposed to direct sunlight. Radiant heat is a key component of WBGT, particularly during afternoon games when solar load is at its highest and humidity typically at its lowest. Notwithstanding, the article highlights the increased risk of environmental heat stress during the 2026 World Cup at different levels of WBGT based on FIFPRO recommendations (26ºC WBGT for cooling and hydration breaks; 28ºC WBGT for match postponement) and the current FIFA guidelines (32ºC WBGT for cooling and hydration breaks). These observations are aligned with other recent reports of greater exposure to more sever conditions than previously. This body of work highlights the need for forward planning of large events like the World Cup, as well as proactive implementation of heat policies. Given that WBGT accounts for environmental conditions only and does not incorporate sport-specific metabolic heat production or the insulating effects of clothing, which can limit heat loss, more advanced models and predictive tools are required to ensure athlete safety. Beyond the health and safety of athletes is that of the fans, which may be required to sit in direct sunlight under hot conditions for protracted amounts of time.