More than 40 million people face high temperature warnings in the United States. Recently, Texas, Louisiana, Mississippi and Florida in the southern United States continue to experience hot weather. According to US media reports, more than 40 million people in the United States are facing a high temperature warning. According to the National Weather Service, many parts of the southern United States along the Gulf Coast suffered high temperatures on the 17th, with somatosensory temperatures as high as 46 to 49 degrees Celsius in places such as Houston and Brownsville, Texas.