Toronto experienced high temperatures and humidity during the final World Cup match between Portugal and Croatia, prompting concerns about player safety. The match at Toronto Stadium saw Portugal defeating Croatia 2-1 amidst a cooldown in downtown Toronto to 27°C with 67% humidity, feeling like 35°C. Earlier, temperatures had soared to 35°C with a humidity-induced heat index of 42°C, leading the city to cancel a popular public viewing event at Nathan Phillips Square.
FIFPRO, the global footballers’ organization, has set guidelines based on the wet bulb globe temperature (WBGT). Games should be delayed if WBGT exceeds 28°C or ambient temperature surpasses 36°C to ensure player, official, and fan safety. The WBGT at the start of the Toronto match was estimated to be close to 28°C, considering sun and wind exposure variations.
WBGT accounts for the body’s cooling mechanism through sweating, affected by relative humidity. When WBGT equals or exceeds body temperature (around 35°C), the body struggles to cool efficiently, posing life-threatening risks. Comparing WBGT to the humidex, which measures perceived heat discomfort, reveals extreme conditions across Ontario and Quebec this week.
Heat-related complications like heat stroke or exhaustion can occur when the body fails to regulate its temperature, impacting performance and safety. Monitoring symptoms like dizziness and lightheadedness, especially in vulnerable individuals, is crucial for heat illness prevention. FIFA has not specified a temperature threshold for match postponement, despite reports of dangerous heat and humidity in some tournament games. Discussions on player welfare and heat-related issues are anticipated at an upcoming FIFPRO news conference.
