Phoenix, Arizona, experienced record-breaking heat on July 9, 2025, with temperatures reaching 118 degrees Fahrenheit at Phoenix Sky Harbor International Airport, surpassing the previous daily record of 116 degrees set last year. This marked the hottest day of the year so far for the city, which is known as America’s hottest city. The high temperature was recorded at 2:24 p.m. MST. The following day, July 10, Phoenix also recorded a record warm low temperature of 95 degrees Fahrenheit, which is close to the all-time warmest low of 97 degrees set on July 19, 2023. The extreme heat contributed to a record energy demand in the city. Forecasts indicated that high temperatures would continue throughout the weekend. Meanwhile, other parts of the western United States also experienced notable temperatures, with Death Valley, California, reaching 124 degrees on July 14, 2025. In contrast, Phoenix’s temperature on July 15 returned to a normal average of 107 degrees for that date.