Last year was the hottest year in NASA’s temperature record, GISTEMP. Overall, the 2023 temperature anomaly was 1.17 C (2.1 F) – meaning temperatures last year were that much higher than the 1951-1980 average. NASA’s record calculates temperature anomalies, rather than absolute temperatures, to account for imprecision in measurements worldwide. Our record is calculated from millions of measurements from thousands of weather stations, ships and ocean buoys, and Antarctic research stations. While

“Climate change is the challenge of our generation, and NASA’s vital work on this important issue affects every person on Earth.” —NASA Administrator Charles Bolden Earth’s 2015 surface temperatures were the warmest since modern record keeping began in 1880, according to independent analyses by NASA and the National Oceanic and Atmospheric Administration (NOAA). Globally-averaged temperatures in 2015 shattered the previous mark set in 2014 by 0.23 degrees Fahrenheit (0.13 Celsius). Only once bef