Arctic sea ice extent

6.717 million km² on 2026-10-17, -0.83 million km² against 1991-2020. NSIDC Sea Ice Index, refreshed at every deploy.

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Arctic sea ice extent

6.717 million km² · 2026-10-17 · -0.83 million km² vs 1991-2020

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1978–2026· baseline 1991-2020 · NSIDC Sea Ice Index, Version 4 (G02135), daily extent · data · json · Freely available; cite the Sea Ice Index · fetched 2026-10-25· Before 1988 the record is every other day; the baseline is the 1991–2020 mean per day of year.

Citations: National Snow and Ice Data Center. Sea Ice Index, Version 4 (G02135). https://doi.org/10.7265/a98x-0f50

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