The record-low Arctic sea ice maximum of 14.3 million square kilometers in March 2026—the smallest or tied for smallest in the 47-year satellite record per NSIDC and NASA data—has preconditioned a below-normal September minimum, driving trader consensus toward extents under 4 million square kilometers (40.5% implied probability). Persistently low extents through late April, with thin young ice dominating, amplify melt potential amid an emerging El Niño (NOAA watch issued April 9), historically linked to reduced summer ice via warmer atmospheric patterns. NOAA CPC UFS models forecast a below-normal minimum, though inherent uncertainties in melt-season weather and ocean heat fluxes persist. The June Sea Ice Prediction Network (SIPN) Outlook will provide updated multi-model medians.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · UpdatedMin Arctic sea ice extent this summer?
Min Arctic sea ice extent this summer?
<4m sq km 41%
4.0-4.2m sq km 22.3%
4.4-4.6m sq km 18.4%
5m+ sq km 14.6%
$33,849 Vol.
$33,849 Vol.
<4m sq km
41%
4.0-4.2m sq km
22%
4.2-4.4m sq km
22%
4.4-4.6m sq km
20%
4.6-4.8m sq km
11%
4.8-5m sq km
2%
5m+ sq km
15%
<4m sq km 41%
4.0-4.2m sq km 22.3%
4.4-4.6m sq km 18.4%
5m+ sq km 14.6%
$33,849 Vol.
$33,849 Vol.
<4m sq km
41%
4.0-4.2m sq km
22%
4.2-4.4m sq km
22%
4.4-4.6m sq km
20%
4.6-4.8m sq km
11%
4.8-5m sq km
2%
5m+ sq km
15%
This market will remain open until data has been published for October 1, 2026, at which point it will resolve immediately. Any revisions to sea ice extent recorded after data is published for October 1, 2026 will not be considered.
The resolution source for this market measures temperatures to thousands of square kilometers (e.g. 4.255 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 minimum value recorded for any day between August 1, 2026 and October 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 October 1, 2026, at which point it will resolve immediately. Any revisions to sea ice extent recorded after data is published for October 1, 2026 will not be considered.
The resolution source for this market measures temperatures to thousands of square kilometers (e.g. 4.255 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 minimum value recorded for any day between August 1, 2026 and October 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 record-low Arctic sea ice maximum of 14.3 million square kilometers in March 2026—the smallest or tied for smallest in the 47-year satellite record per NSIDC and NASA data—has preconditioned a below-normal September minimum, driving trader consensus toward extents under 4 million square kilometers (40.5% implied probability). Persistently low extents through late April, with thin young ice dominating, amplify melt potential amid an emerging El Niño (NOAA watch issued April 9), historically linked to reduced summer ice via warmer atmospheric patterns. NOAA CPC UFS models forecast a below-normal minimum, though inherent uncertainties in melt-season weather and ocean heat fluxes persist. The June Sea Ice Prediction Network (SIPN) Outlook will provide updated multi-model medians.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · Updated
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