Scientists Link Extreme World Cup Heat to Human-Caused Climate Change

Researchers say rising global temperatures intensified dangerous heat conditions experienced during several matches at the 2026 FIFA World Cup.

A new scientific analysis has concluded that the extreme heat affecting several matches during the 2026 FIFA World Cup was significantly intensified by human-driven climate change, raising fresh concerns about athlete safety and the future of major sporting events.

The findings were released by researchers from the World Weather Attribution initiative, an international group of climate scientists that studies the influence of climate change on extreme weather events. According to the study, the prolonged heatwave across parts of the United States and Canada created conditions that would have been far less severe without global warming caused by greenhouse gas emissions.

Scientists explained that a persistent heat dome—a high-pressure weather system that traps hot air near the Earth's surface—combined with long-term global warming to produce dangerous temperatures at several tournament venues. In some host cities, the heat index was forecast to reach between 105°F and 115°F (40.5°C to 46°C) during match days.

Medical experts have warned that such conditions increase the risk of dehydration, heat exhaustion and heat stroke for both players and spectators. The global football players' union, FIFPRO, has previously urged organisers to adopt stricter heat safety measures, including adjusting kick-off times and introducing mandatory cooling breaks when temperatures exceed safe limits.

Researchers say the study highlights how climate change is increasingly affecting sectors bey

ond the environment, including global sport, public health and infrastructure. They argue that future international tournaments may require new scheduling strategies and climate adaptation measures as extreme weather events become more frequent.

With global temperatures continuing to rise, scientists warn that sporting organisations will need to balance competitive schedules with player welfare and environmental realities in the years ahead.