June 2023 was the hottest June ever recorded, according to NASA’s global temperature analysis. This analysis is based on data collected from weather stations, research stations, ships, and ocean buoys. Scientists at NASA’s Goddard Institute for Space Studies in New York analyze this data to account for uncertainties and maintain consistent methods for calculating global average surface temperature differences. These measurements are consistent with satellite data collected since 2002 by NASA’s Aqua satellite and with other estimates. NASA uses the period from 1951-1980 as a baseline to understand how global temperatures change over time. The European Union’s Copernicus Climate Change Service and NOAA’s National Centers for Environmental Information also found June 2023 to be the warmest June on record.