The Arctic just experienced its hottest year on record, a milestone that scientists said was already changing weather systems far beyond the polar circle.
Surface air temperatures across the Arctic between October 2024 and September 2025 were the highest since at least 1900, according to the Arctic Report Card 2025, released this week by the US National Oceanic and Atmospheric Administration. It shows the region is now warming at more than twice the global average, with its 10 warmest years all coming in the past decade.