美西部极端高温风险预警覆盖人口超百万

Core Points - The article reports on extreme high-temperature weather conditions affecting the western United States, with a heat risk warning covering approximately 1.2 million people [2] - Weather forecasts indicate that temperatures in regions such as Washington, Oregon, Arizona, and Southern California are expected to reach "dangerous" levels over the weekend [2] - The National Weather Service forecasts the highest temperatures in the Tucson area of Arizona, with expected highs between 39 to 42 degrees Celsius [2]