Forecast models indicate that several host cities could face dangerously high temperatures during tournament periods, intensifying scrutiny over scheduling, player welfare and public-health preparedness.
The expanded tournament, which will feature 48 national teams for the first time in FIFA history, is expected to increase logistical pressure on organisers already managing travel complexity, stadium operations and broadcast infrastructure across North America.
Medical researchers warn that prolonged exposure to high temperatures could elevate the risk of dehydration, heat exhaustion and performance-related health complications for players, staff and spectators.
The concerns are also accelerating broader debates around climate resilience in global sports infrastructure, particularly as major sporting events increasingly intersect with extreme weather conditions linked to climate change.
Football unions and athlete representatives are reportedly seeking additional cooling protocols, adjusted kick-off schedules and expanded medical safeguards ahead of the tournament.
Industry analysts say the issue could become one of the defining operational and reputational challenges facing FIFA before the competition begins.
