25% of World Cup 2026 Matches at Risk of Dangerous Heat: Scientists Demand FIFA Lower Safety Threshold

The **World Weather Attribution (WWA)** network has delivered the most detailed climate analysis yet of World Cup 2026, warning that **26 out of 104 matches** — exactly 25% of the tournament — could be played in conditions exceeding safe heat thresholds for elite athletes.

The WWA report projects that **Wet Bulb Globe Temperature (WBGT)** — the most accurate measure of heat stress on athletes — could exceed **26°C** for a quarter of all matches. This is the threshold at which FIFPRO, the global players' union, recommends mandatory cooling breaks. At **28°C WBGT**, FIFPRO recommends match postponement. FIFA's current threshold for suspending matches sits at **32°C WBGT** — a level that scientists describe as "dangerously inadequate."

The cities at highest risk: **Houston** (NRG Stadium), **Miami** (Hard Rock Stadium), **Monterrey** (Estadio BBVA), and **Dallas** (AT&T Stadium). The combination of high temperatures, humidity, and stadium microclimates creates conditions that could put players and fans at genuine risk.

Several host venues still lack adequate cooling infrastructure. While Qatar 2022 moved the entire tournament to November and built air-conditioned stadiums, World Cup 2026 returns to the traditional June-July window in North American summer — and the stadiums were not built with World Cup-level heat management in mind. Retractable roofs help in Dallas and Atlanta, but outdoor fan zones, training facilities, and transportation hubs lack cooling solutions.

Afternoon kickoffs maximize European prime-time viewership — and advertising revenue. Moving matches to cooler evening slots would cost broadcasters millions and disrupt commercial schedules that have been locked in for years. Players and coaches have privately expressed concerns, but publicly FIFA has maintained that existing protocols are "appropriate for the conditions."