World Cup 2026 heat risk: Study warns one in four matches could face dangerous conditions
Study warns one in four World Cup 2026 matches may face dangerous heat and humidity, highlighting wet‑bulb risks, cooling gaps at venues and implications for player and fan safety.
Scientists find one in four World Cup 2026 matches at heat risk
A consortium of climate scientists says the World Cup 2026 heat risk is substantial, estimating that about 26 of the 104 tournament matches could see wet‑bulb globe temperatures reach 26°C or higher. The analysis, released by the World Weather Attribution network, compares current projections to conditions during the 1994 World Cup and finds a notable increase in heat‑related risk across North America.
The researchers warn that the combined effects of temperature and humidity will create more frequent episodes of dangerous heat stress for players and spectators. Their findings prompted tournament planners to incorporate mid‑half cooling breaks at selected venues already, but scientists say more measures will be needed if projected conditions materialize.
Wet‑bulb globe temperature identified as the key metric
The study uses the wet‑bulb globe temperature (WBGT) to quantify risk, a standard index that accounts for air temperature, humidity, solar radiation and wind speed. Scientists set a 26°C WBGT threshold as the level at which heat stress becomes a serious concern and at which FIFPRO recommends implementing cooling interventions during play.
At the 26°C WBGT level, physiological mechanisms for dissipating heat are compromised and the risk of heat illness increases significantly. The choice of this metric underlines that dry temperature alone does not capture the full danger to players and crowds in humid settings.
Twenty‑six matches flagged, most in stadiums with cooling systems
The network’s analysis flags 26 matches as likely to reach the 26°C WBGT threshold, and notes that 17 of those contests are scheduled in venues equipped with active cooling systems. Tournament hosts have already established cooling breaks to reduce immediate risk in each half at 16 stadiums across the United States, Mexico and Canada.
Nonetheless, the report highlights a gap: only three of the 16 stadiums assessed—those in Dallas, Houston and Atlanta—have permanent stadium air‑conditioning systems. That leaves a significant portion of high‑risk matches to be played in venues without comprehensive cooling infrastructure.
Five matches could exceed 28°C WBGT, triggering postponement guidelines
Beyond the 26‑match projection, the analysis identifies five matches that may see WBGT levels reach or exceed 28°C, a threshold at which FIFPRO guidance advises postponement or delaying kick‑off until conditions improve. The study further observes that the overall heat risk for World Cup 2026 has nearly doubled compared with the 1994 tournament held in the United States.
This escalation reflects both rising baseline temperatures and increased humidity in many host cities during the tournament window. Organizers will face difficult scheduling and operational choices if conditions approach the higher threshold during key fixtures.
Final in MetLife Stadium carries a measurable chance of extreme heat
The report places a tangible probability on the final in MetLife Stadium on July 19, estimating roughly a one‑in‑eight chance that WBGT could reach 26°C and a 2.7 percent chance of exceeding 28°C. World Weather Attribution co‑founder Friederike Otto, an Imperial College London climate scientist, described the prospect of the final being affected by cancelation‑level heat as an alarm bell for FIFA and spectators alike.
Otto also emphasized that spectators are often more vulnerable than players because they gather outdoors for extended periods without guaranteed immediate medical support. The combination of packed seating, limited shade and extended exposure can increase the likelihood of heat‑related incidents among fans.
Implications for FIFA, teams and fan safety measures
The study’s authors say the findings should prompt a reevaluation of operational protocols, including kick‑off times, additional cooling capacities, expanded medical staffing and clearer contingency plans for postponement. FIFA has already introduced cooling breaks at designated matches, but experts argue that tactical scheduling changes and infrastructure investments may be required to fully mitigate risks.
Teams and player unions may also need to intensify monitoring and heat‑acclimation programs, while host cities should prioritize shade, hydration stations and rapid response medical facilities for spectators. The analysis underscores that mitigation measures will have to be layered and proactive to protect both players and the broader public.
The World Cup 2026 heat projections highlight the real and growing intersection of elite sport and climate change, raising operational, safety and reputational questions for tournament organizers. As the event approaches, decisions on scheduling, venue preparation and emergency readiness will determine whether the tournament can proceed safely when heat and humidity peak.
