The Washington Post has created a series of visualizations tracking the use of air conditioners in the United States. One visualization displays the number of summer days with heat indexes above 65 degrees, a temperature that typically necessitates air conditioning. According to the visualization, in the early 1980s, the continental United States needed air conditioning for 66 percent of the summer. However, by 2060, the country will likely need air conditioning for 87 percent of the summer.