A heat wave with peak indexes of 100-115 F is forecast to affect the eastern and central United States through the end of the week, coinciding with the scheduled France versus Paraguay World Cup knockout match on Saturday afternoon in Philadelphia. French players previously used field sprinklers to cool off during a 90 F match against Sweden in New Jersey on June 30 2026. Global temperatures have risen 1.26 F over the past three decades according to verified reports.