Current weather conditions in Canada and the United States have led to dangerous levels of heat. Because of this, it is necessary to follow specific health and safety guidelines to protect the body and the environment.

加拿大與美國目前的天氣狀況導致氣溫達到危險水平。因此，有必要遵循特定的健康與安全指南，以保護身體與環境。

The appearance of 'heat domes'—high-pressure systems that trap heat and humidity—has increased the risk of heat stress. Health Canada and the Canadian Climate Institute emphasize that certain groups, such as infants, the elderly, and people with chronic illnesses, are the most vulnerable. Symptoms of heat stroke, which occurs when the body temperature rises above 40 degrees Celsius, include nausea, dizziness, and extreme tiredness. In these cases, experts advise immediate cooling and emergency medical help, while warning against using fever-reducing medication as it may hide the actual temperature of the body.

「熱穹頂」——即將熱量與濕度困住的高壓系統——的出現，增加了熱壓力的風險。加拿大衛生部與加拿大氣候研究所強調，某些群體，如嬰兒、長者及慢性病患者，是最容易受影響的。中暑發生在體溫升高至 40 攝氏度以上，症狀包括噁心、眩暈與極度疲倦。在這些情況下，專家建議立即降溫並尋求緊急醫療救助，同時警告不要使用退燒藥，因為這可能會掩蓋身體的實際溫度。

To reduce these risks, experts suggest limiting time outdoors and choosing the right clothing. Environment Canada recommends scheduling activities for the early morning or after sunset to avoid the strongest sunlight. Furthermore, wearing light-colored, loose clothes and UV-protective glasses is advised to reduce heat absorption. Regarding hydration, the Red Cross suggests drinking fluids regularly even if you are not thirsty. However, the CDC specifies that outdoor workers should drink about 32 ounces of water per hour, warning that drinking more than 48 ounces per hour could cause a dangerous drop in sodium levels.

為了降低這些風險，專家建議限制戶外停留時間並選擇合適的衣著。加拿大環境部建議將活動安排在清晨或日落後，以避開最強的陽光。此外，建議穿著淺色、寬鬆的衣服並配戴防紫外線眼鏡，以減少吸熱。關於補水，紅十字會建議即使沒有口渴感也應定期飲水。然而，美國疾控中心（CDC）明確指出，戶外工作者每小時應飲用約 32 盎司的水，並警告每小時飲用超過 48 盎司可能會導致鈉水平危險下降。

Additionally, the 'urban heat island' effect makes heat risks worse in big cities like Dallas. Research by CAPA Strategies shows that concrete and asphalt absorb and release heat, creating a big difference between the air temperature and the surface temperature. For example, surfaces can reach 50 degrees Celsius even when the air is only 32 degrees Celsius. Consequently, moving between transport hubs and event venues, such as those for the FIFA World Cup, is a dangerous time. It is essential to use cooling zones and shaded areas to prevent a sudden decline in health.

此外，「都市熱島」效應使達拉斯等大城市的熱風險更加嚴重。CAPA Strategies 的研究顯示，混凝土與瀝青會吸收並釋放熱量，導致氣溫與表面溫度之間存在巨大差異。例如，即使氣溫僅為 32 攝氏度，表面溫度仍可達到 50 攝氏度。因此，在交通樞紐與活動場館（如 FIFA 世界盃場館）之間移動是危險時刻。利用冷卻區與遮蔭處來防止健康突然惡化至關重要。

To stay safe, people should combine strategic hydration, appropriate clothing, and the avoidance of hot city surfaces during the hottest parts of the day.

為了保持安全，人們應將策略性補水、合適的衣著，以及在一天中最熱的時段避免接觸炎熱的城市表面相結合。