The Arctic Report Card 2025 reveals unprecedented warming and widespread ecological changes in the Arctic region. The report clearly demonstrates that the pace of climate change has accelerated significantly and its impacts are no longer confined to the polar regions, but are profoundly affecting the global environmental balance and socio-economic structures.

According to the report, the rate of temperature increase in the Arctic is several times higher than the global average. Rising temperatures are leading to rapid melting of sea ice, shrinking glaciers, and permafrost degradation. These changes not only increase the risk of sea-level rise but are also causing instability in global weather patterns.

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¨     The Arctic Report Card 2025 is the 20th annual edition, published by the National Oceanic and Atmospheric Administration (NOAA) with contributions from international scientists and Indigenous partners.

¨     The report provides a peer-reviewed assessment of atmospheric, oceanic, cryospheric and terrestrial changes in the Arctic region.

¨     It documents conditions observed mainly between October 2024 to September 2025.

Key Findings of the Arctic Report Card 2025

Arctic Climate

¨     The Arctic recorded its warmest surface air temperatures since 1900 during October 2024 to September 2025.

¨     The last ten years have been the ten warmest on record in the Arctic.

¨     Arctic temperatures have risen at more than twice the global average rate since 2006.

¨     Precipitation levels during the year reached a new historical high.

Arctic Ocean and Sea Ice

¨     Winter sea ice extent in March 2025 was the lowest in the 47-year satellite record.

¨     September 2025 marked the tenth lowest minimum sea ice extent on record.

¨     The oldest and thickest multi-year sea ice has declined by over 95 percent since the 1980s.

¨     Atlantification has reached the central Arctic Ocean, weakening ocean stratification and accelerating ice melt.

¨     Atlantification refers to the increasing influence of warm, salty Atlantic Ocean waters in the Arctic Ocean, leading to physical, chemical, and biological changes in the Arctic marine system.

Marine Ecosystems

¨     Phytoplankton productivity increased sharply across most Arctic regions between 2003 and 2025.

¨     Warming seas and reduced ice cover are reshaping fish distribution and Arctic fisheries, affecting food security and Indigenous subsistence practices.

¨     Warmer conditions are driving northward expansion of boreal species into Arctic waters and landscapes, altering food webs and traditional ecological balances.

Cryosphere and Glaciers

¨     Arctic glaciers in Scandinavia and Svalbard recorded their highest annual ice loss between 2023 and 2024.

¨     The Greenland Ice Sheet lost about 129 billion tonnes of ice in 2025.

¨     Long-term glacier loss is contributing to global sea level rise and increasing disaster risks.

Land Systems and Permafrost

¨     Iron and other mineral mobilization from thawing permafrost has turned waters orange in over 200 Arctic Alaska watersheds called “Rusting Rivers,” degrading water quality, habitat, and traditional water supplies.

¨     Thawing permafrost refers to the melting of permanently frozen ground that has remained at or below 0 °C for at least two consecutive years, mainly found in Arctic and sub-Arctic regions.

¨     Degraded water quality is threatening aquatic ecosystems and rural drinking water supplies.

¨     Arctic tundra greenness in 2025 was the third highest in the satellite record.

¨     Arctic tundra greenness (subset of the “Greening of the Arctic”) refers to the observed increase in vegetation growth and plant productivity in Arctic tundra regions due to rising temperatures and longer growing seasons.

Indigenous Knowledge and Partnerships

¨     Indigenous-led observation networks continue to play a critical role in monitoring environmental change.

¨     Community-based initiatives are improving food safety and environmental awareness.

¨     Long-standing partnerships enhance scientific understanding and adaptive capacity in the Arctic.

Significance of the Report

¨     Bellwether of Climate Change: The report underscores the Arctic as a frontline indicator of global climate change.

¨     Mitigation Need: It highlights the urgency of climate mitigation due to cascading global impacts.

¨     Role of Indigenous Communities: It reinforces the importance of local communities and their Indigenous knowledge in climate science.

¨     Global Environmental Architecture: It informs the need to strengthen International climate policy and environmental governance efforts.