Phoenix, often regarded as the United States' hottest city, has concluded what one might call a sweltering ballet of record-breaking heat this autumn, with temperatures in October soaring past 110 degrees Fahrenheit four times—an unprecedented statistic for the month. According to a report by ABC15, the city also set an annual record of 70 days with the mercury breaching 110 degrees, surpassing the previous late-season high from September 19, 2010.