India, June 12 -- Climate Central says 97 of the 104 scheduled matches at the 2026 FIFA World Cup could face temperatures linked to reduced player performance.

Nearly half of all matches have at least a 50% likelihood of experiencing "performance-impairing heat", according to the analysis.

US venues are expected to face the highest heat risks, with Portugal's match in Houston and Argentina's game in Kansas among those flagged.

Researchers say temperatures above 28degC can reduce sprint frequency, distance covered and recovery time, affecting match pace and tactics.

More than 100 current and former players have called on FIFA to strengthen heat-safety protocols ahead of the tournament.

Rising heat linked to climate change could affect...