The National Snow and Ice Data Center (NSIDC) confirmed the 2026 Arctic sea ice maximum extent at 14.29 million square kilometers on March 15, tying the record low set in 2025 and falling 1.36 million square kilometers below the 1981-2010 average, as measured by satellite passive microwave sensors. This measurement, representing trader consensus with 97% implied probability for the 14.2-14.4 million square kilometer bin, reflects persistent long-term decline driven by warming air and ocean temperatures amid a neutral-to-weak La Niña pattern. While post-maximum extent has declined steadily into April, a rare upward revision in NSIDC's final analysis—due to data processing adjustments—could shift it toward adjacent bins, though historical precedents show such changes under 0.1 million square kilometers.
Experimental AI-generated summary referencing Polymarket data · UpdatedMax Arctic sea ice extent this winter?
Max Arctic sea ice extent this winter?
14.2-14.4m sq km 97.0%
14-14.2m sq km <1%
14.4-14.6m sq km <1%
14.8-15m sq km <1%
$43,422 Vol.
$43,422 Vol.

<14m sq km
<1%

14-14.2m sq km
1%

14.2-14.4m sq km
97%

14.4-14.6m sq km
1%

14.6-14.8m sq km
<1%

14.8-15m sq km
1%

15m+ sq km
1%
14.2-14.4m sq km 97.0%
14-14.2m sq km <1%
14.4-14.6m sq km <1%
14.8-15m sq km <1%
$43,422 Vol.
$43,422 Vol.

<14m sq km
<1%

14-14.2m sq km
1%

14.2-14.4m sq km
97%

14.4-14.6m sq km
1%

14.6-14.8m sq km
<1%

14.8-15m sq km
1%

15m+ sq km
1%
This market will remain open until data has been published for April 1, 2026, at which point it will resolve immediately. Any revisions to sea ice extent recorded after data is published for April 1, 2026 will not be considered.
The resolution source for this market measures Arctic sea ice extent to thousands of square kilometers (e.g. 14.255 million sq km). Thus, this is the level of precision that will be used when resolving the market.
The resolution source for this market will be information from the National Snow and Ice Data Center, specifically the maximum value recorded for any day between November 20, 2025 and April 1, 2026 in the “NH-Daily-Extent” tab of the “Sea Ice Index Daily Extent” data set, available at https://nsidc.org/sea-ice-today/sea-ice-tools. If this resolution source becomes unavailable, another resolution source will be chosen.
Market Opened: Nov 20, 2025, 6:43 PM ET
Resolver
0x2F5e3684c...This market will remain open until data has been published for April 1, 2026, at which point it will resolve immediately. Any revisions to sea ice extent recorded after data is published for April 1, 2026 will not be considered.
The resolution source for this market measures Arctic sea ice extent to thousands of square kilometers (e.g. 14.255 million sq km). Thus, this is the level of precision that will be used when resolving the market.
The resolution source for this market will be information from the National Snow and Ice Data Center, specifically the maximum value recorded for any day between November 20, 2025 and April 1, 2026 in the “NH-Daily-Extent” tab of the “Sea Ice Index Daily Extent” data set, available at https://nsidc.org/sea-ice-today/sea-ice-tools. If this resolution source becomes unavailable, another resolution source will be chosen.
Resolver
0x2F5e3684c...The National Snow and Ice Data Center (NSIDC) confirmed the 2026 Arctic sea ice maximum extent at 14.29 million square kilometers on March 15, tying the record low set in 2025 and falling 1.36 million square kilometers below the 1981-2010 average, as measured by satellite passive microwave sensors. This measurement, representing trader consensus with 97% implied probability for the 14.2-14.4 million square kilometer bin, reflects persistent long-term decline driven by warming air and ocean temperatures amid a neutral-to-weak La Niña pattern. While post-maximum extent has declined steadily into April, a rare upward revision in NSIDC's final analysis—due to data processing adjustments—could shift it toward adjacent bins, though historical precedents show such changes under 0.1 million square kilometers.
Experimental AI-generated summary referencing Polymarket data · Updated


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