La Niña and record cold temperatures in the U.S. should have made Earth cooler, but January 2025 was still the hottest on record, with an average global warming of 3.15 F (1.75 C) above pre-industrial levels.

The world set yet another monthly heat record in January, despite an abnormally chilly U.S., a cooling La Nina​​ and predictions of a slightly less hot 2025, the European climate service Copernicus says.

Douglas McIntyre, Editor-in-Chief at Climate Crisis, reports that January was the hottest in recorded history, according to NASA. Despite hopes for slowing climate change, insufficient progress in green energy and government policies has kept global temperatures rising.