A peer-reviewed analysis estimates the 2026 World Cup will produce nine million tons of carbon dioxide equivalent, nearly double the average of recent tournaments. The emissions stem largely from expanded team air travel across Canada, Mexico, and the United States. Host cities face varying sustainability challenges and climate risks.
The tournament, featuring 48 teams and 104 matches across 16 cities, begins June 11 in Mexico City. Scientists for Global Responsibility, the Environmental Defense Fund, Cool Down, the Sport for Climate Action Network, and the New Weather Institute calculated the total at nine million tons of CO2 equivalent. Team flights account for 7.7 million tons, or 85% of the footprint, due to the event's scale and North American spread. For comparison, Qatar's 2022 stadiums lay within 34 miles, while 2026's closest venues—MetLife in New Jersey and Lincoln Financial Field in Philadelphia—are 95.5 miles apart. One potential team path covers Toronto to Los Angeles (2,175 miles), Los Angeles to Seattle (932 miles), and more to Boston (2,500 miles). FIFA has not imposed binding emissions limits on host cities, though researchers call for reversing the expansion, mandating standards, and dropping sponsors like Aramco, linked to 30 million additional tons. Climate risks add urgency. Six stadiums face extreme heat stress with Wet Bulb Globe Temperatures above 80°F, dangerous for exertion. AT&T Stadium in Arlington, Texas—hosting nine matches—sees 37 days yearly over 95°F. NRG Stadium in Houston risks heat, flooding, and wildfires; Los Angeles wildfire smoke; and Miami hurricanes. Eight cities need immediate intervention, four critical. A World Sports Network ranking from April 2026 scores cities on transit, emissions, and more. Vancouver leads, aided by renewable hydropower and central transit to BC Place. Boston follows, bolstered by flood preparations and emissions rules. Mexico City, Toronto, and Monterrey round out the top five, highlighting non-U.S. strengths despite 11 American venues. U.S. sites often lag on public transit, prompting event-specific measures like Dallas's bus system.
