The 2026 FIFA World Cup is estimated to emit 8.6 million metric tons of CO2 [1], more than double the emissions of the 2022 tournament.

This projection highlights the environmental tension between the global growth of the sport and international climate goals. As the tournament scales in size and geography, the carbon footprint of hosting the event increases significantly.

The tournament kicks off on June 11, 2026 [2]. Matches will be played in 16 host cities [1] distributed across the U.S., Canada, and Mexico [1].

This edition of the World Cup marks a significant expansion in the number of participating teams, growing from 32 to 48 teams [1]. This increase in participants drives a sharp rise in greenhouse-gas emissions due to the heightened requirements for international travel and stadium use [1].

The scale of the event requires extensive logistical coordination across three nations. The increased travel for teams, officials, and millions of fans, combined with the energy demands of 16 different urban hubs, contributes to the projected 8.6 million metric tons of CO2 [1].

FIFA is managing the organization of the event, while Reuters said the emissions estimates are based on the expanded format [1]. The environmental impact is under scrutiny as the tournament moves toward its start date this week [2].

The 2026 FIFA World Cup is estimated to emit 8.6 million metric tons of CO2.

The projected spike in emissions underscores the difficulty of decarbonizing mega-events that rely on long-haul aviation and massive infrastructure. By expanding the tournament to 48 teams and spreading venues across three countries, FIFA has traded the concentrated footprint of a single-city tournament for a dispersed, high-emission model that challenges the organization's sustainability claims.