The governing body utilized a tiered heat mitigation model, stationed on-site meteorologists, and provided cooling resources such as ice, misting fans, and electrolyte drinks.
"As FIFA and the 2026 World Cup have taken meaningful proactive steps in introducing these safeguards, there remains a critical need for more research on the lived experiences of fans, players, and workers under these new weather conditions," DeVincenzo added.
Extreme weather impacts have extended beyond high temperatures.
On June 22, severe rainstorms forced a two-hour delay for the match between France and Iraq, marking the first precipitation-related postponement at a World Cup since 1974.
"Sport is the world's greatest unifying force, and football is the world's biggest sport," Stiell said.
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"If everyone who loves football speaks up to protect it from climate impacts like extreme heat, we can kick the dependence on planet-heating fossil fuels and move much faster to clean energy."