The tied record-low Arctic winter sea ice maximum extent of 14.29 million square kilometers reached on March 15, 2026—per National Snow and Ice Data Center (NSIDC) and NASA analyses—positions traders toward a sub-4 million sq km summer minimum, reflecting 49.5% market-implied probability. This extent, 1.36 million sq km below the 1981-2010 average, indicates a thin ice pack vulnerable to melt amid decades-long decline driven by warming air and ocean temperatures. NOAA's Climate Prediction Center forecasts a 61% chance of El Niño by May-July 2026, which could intensify melt via jet stream disruptions favoring heat export to the Arctic. Uncertainties in melt-season weather persist; upcoming Sea Ice Prediction Network outlooks and NSIDC monitoring will refine probabilities.
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 54%
4.0-4.2m sq km 15.0%
4.4-4.6m sq km 13.5%
4.6-4.8m sq km 11%
$30,601 Vol.
$30,601 Vol.
<4m sq km
54%
4.0-4.2m sq km
15%
4.2-4.4m sq km
12%
4.4-4.6m sq km
13%
4.6-4.8m sq km
11%
4.8-5m sq km
2%
5m+ sq km
1%
<4m sq km 54%
4.0-4.2m sq km 15.0%
4.4-4.6m sq km 13.5%
4.6-4.8m sq km 11%
$30,601 Vol.
$30,601 Vol.
<4m sq km
54%
4.0-4.2m sq km
15%
4.2-4.4m sq km
12%
4.4-4.6m sq km
13%
4.6-4.8m sq km
11%
4.8-5m sq km
2%
5m+ sq km
1%
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 tied record-low Arctic winter sea ice maximum extent of 14.29 million square kilometers reached on March 15, 2026—per National Snow and Ice Data Center (NSIDC) and NASA analyses—positions traders toward a sub-4 million sq km summer minimum, reflecting 49.5% market-implied probability. This extent, 1.36 million sq km below the 1981-2010 average, indicates a thin ice pack vulnerable to melt amid decades-long decline driven by warming air and ocean temperatures. NOAA's Climate Prediction Center forecasts a 61% chance of El Niño by May-July 2026, which could intensify melt via jet stream disruptions favoring heat export to the Arctic. Uncertainties in melt-season weather persist; upcoming Sea Ice Prediction Network outlooks and NSIDC monitoring will refine probabilities.
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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