The contiguous U.S. is about 2.8°F warmer today than in 1970, based on average temperatures. This is above the long-term average global warming limit of 2.7°F (1.5°C) that nearly every country has agreed to pursue.

Climate Central analyzed average annual temperature trends since 1970 in 49 states and 242 U.S. cities (see Methodology) to understand how temperatures across the country have changed as heat-trapping pollution has continued to climb.