FIFA's heat protocol states that cooling breaks should be introduced at 32C air temperature and that match delays or suspensions should be considered when wet-bulb globe temperature exceeds 32C. Uruguay's 2-2 draw with Cape Verde on June 21 at Miami's Hard Rock Stadium reached or exceeded 33C WBGT, according to Guardian analysis of weather data from US and UK government agencies [2][3]. FIFA introduced three-minute hydration breaks for every match this tournament but did not delay or suspend any games [2].
Nine matches above the union's danger threshold
Six of the first 24 matches were held in conditions where WBGT hit 28C or above [2]. That is the threshold at which Fifpro, the global players' union, has stated games should trigger delay or postponement [2]. Nine matches in the group stage were played amid potentially dangerous heat and humidity by that standard [2].
WBGT accounts for humidity, direct sunlight, and wind to measure heat stress and the body's ability to cool itself through sweating [2]. It is a different metric than air temperature. FIFA's public guideline references 32C air temperature for cooling breaks, but at WBGT readings above 32C, FIFA says match delays or suspensions should be considered [1][2]. The gap between Fifpro's 28C threshold and FIFA's 32C consideration point is four degrees Celsius.
Uruguay's match against Saudi Arabia six days before the Cape Verde game recorded an estimated 32.9C WBGT in Miami, the previous tournament high in the Guardian's analysis of the first 24 matches [2][3]. Both Uruguay matches in Miami exceeded FIFA's own stated threshold for considering suspension.
Air conditioning creates two-tier system
An additional 13 matches may have been played in cities with temperatures beyond dangerous levels, but air conditioning in stadiums brought temperatures down to playable levels [2]. England played Croatia in Dallas in outdoor wet-bulb temperatures of nearly 35C, but air conditioning inside the stadium reduced that to 22C [2].
The mechanism creates a split tournament. Matches in climate-controlled venues proceed regardless of outdoor conditions. Matches in open-air or non-air-conditioned stadiums expose players to the full heat load. Which matches received protection and which did not depended on stadium infrastructure, not on a uniform heat safety standard applied across all venues.
The Guardian used a formula devised by the Australian Bureau of Meteorology to calculate WBGT estimates from government weather data [2]. The methodology produces estimates, not direct measurements from inside stadiums, but the readings show where outdoor conditions alone would have triggered Fifpro's 28C threshold.
Extreme heat kills more than other weather events
Extreme heat is the deadliest form of extreme weather, causing more deaths every year than hurricanes, floods, and wildfires combined [2]. A UN climate official stated that the extreme heat affecting the sport is caused by more than a century of burning fossil fuels like coal, oil, and gas [2].
The 2026 World Cup is projected to be the hottest World Cup tournament since the competition began in 1930 [2]. The projection matters because FIFA has not revised its heat protocol to align with Fifpro's lower threshold, and the next tournament will include matches in southern US cities during June and July when outdoor temperatures routinely exceed both standards.
If FIFA does not change its 32C WBGT consideration threshold, players in stadiums without air conditioning will face the same conditions that occurred in Miami this June. Group stage matches scheduled for Dallas, Monterrey, and Miami in summer 2026 will determine whether FIFA applies its suspension guideline or continues to rely on hydration breaks as the primary intervention. The players on the field in those cities will absorb the difference between a guideline and its enforcement.
FIFA's current stance places the burden of heat exposure on athletes rather than on tournament organizers to ensure safe playing conditions. Until the governing body adopts enforceable heat standards that reflect current medical guidance, the world's most-watched sporting event will continue to function as a test of heat endurance as much as football skill.
