Key facts
- The 2026 World Cup faces diverse weather risks across its 16 North American host cities.
- Thunderstorms, heat, humidity, and potential tropical storms are significant concerns.
- Lightning can cause match delays, with play suspended if strikes occur within 8 miles of stadiums.
- Heat-stress risk is assessed using the WBGT index, with Fifa considering action above 32C.
- Mexico City's high altitude poses challenges due to thinner air and reduced oxygen availability.
The 2026 World Cup, set to be played across 16 cities in North America, faces a formidable challenge from summer weather conditions, ranging from thunderstorms to extreme heat and humidity.
Thunderstorms have already disrupted pre-tournament matches, with England's warm-up against Costa Rica in Orlando delayed by lightning and heavy rain. Venues have safety regulations that suspend play when lightning is detected within approximately 8 miles, with play resuming 30 minutes after the last strike. Miami and Houston are identified as the most lightning-prone cities, though Houston's stadium features a retractable roof. The northeastern U.S. and southeastern Canada may also experience scattered storms with strong gusts and hail, posing a slight risk to matches in Toronto, Boston, and New York.
Beyond storms, heat and humidity are expected to present the most widespread challenge. Fifa utilizes the Wet Bulb Globe Temperature (WBGT) index to assess heat-stress risk, with 28C WBGT considered unsafe for high-exertion play by many exercise physiologists and Fifa considering action above 32C. A 2025 study indicated that 14 of the 16 host cities could exceed 28C WBGT at some point, although some stadiums are equipped with roofs and air conditioning.
Tropical storm activity is also a possibility during the early Atlantic hurricane season, with Mexican venues, Houston, and Miami at the highest risk due to their proximity to warm waters in the Gulf of Mexico and western Caribbean. The National Hurricane Center is monitoring a low-pressure area over the Bay of Campeche for potential cyclone formation.
Mexico City presents a unique challenge due to its high altitude of about 2,240 meters, leading to reduced oxygen availability, accelerated fatigue, and altered ball flight. Canadian venues are anticipated to remain relatively cooler with a lower risk of disruptive weather. The uneven distribution of these challenging weather conditions has sparked concerns about competitive fairness among the participating teams.