"every location on Earth" is asking sort of a lot, but you might start at https://climatedataguide.ucar.edu/climate-data/global-temperature-data-sets-overview-c

"every location on Earth" is asking sort of a lot, but you might start at https://climatedataguide.ucar.edu/climate-data/global-temperature-data-sets-overview-comparison-table https://climatedataguide.ucar.edu/climate-data/global-temper...