The record-tying lowest Arctic winter sea ice maximum of 14.29 million square kilometers on March 15, 2026—per National Snow and Ice Data Center (NSIDC) measurements—positions traders to favor a summer minimum extent below 4 million square kilometers at 41.5% implied probability, reflecting a thinner, younger ice pack highly susceptible to melt. Persistent negative extent anomalies through early April, above-average air temperatures, and NOAA's forecast of ENSO-neutral conditions transitioning to possible El Niño (61% chance May-July 2026) amplify melt risks via enhanced atmospheric heat transport. Outcomes cluster around 4-4.4 million square kilometers (33.4% combined), acknowledging forecast model spread; SIPN outlooks due in coming weeks will provide updated ensemble medians ahead of the August-October resolution window.
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 42%
4.2-4.4m sq km 16.1%
4.0-4.2m sq km 14.9%
4.6-4.8m sq km 11%
$30,894 Vol.
$30,894 Vol.
<4m sq km
42%
4.0-4.2m sq km
15%
4.2-4.4m sq km
16%
4.4-4.6m sq km
16%
4.6-4.8m sq km
11%
4.8-5m sq km
2%
5m+ sq km
1%
<4m sq km 42%
4.2-4.4m sq km 16.1%
4.0-4.2m sq km 14.9%
4.6-4.8m sq km 11%
$30,894 Vol.
$30,894 Vol.
<4m sq km
42%
4.0-4.2m sq km
15%
4.2-4.4m sq km
16%
4.4-4.6m sq km
16%
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 record-tying lowest Arctic winter sea ice maximum of 14.29 million square kilometers on March 15, 2026—per National Snow and Ice Data Center (NSIDC) measurements—positions traders to favor a summer minimum extent below 4 million square kilometers at 41.5% implied probability, reflecting a thinner, younger ice pack highly susceptible to melt. Persistent negative extent anomalies through early April, above-average air temperatures, and NOAA's forecast of ENSO-neutral conditions transitioning to possible El Niño (61% chance May-July 2026) amplify melt risks via enhanced atmospheric heat transport. Outcomes cluster around 4-4.4 million square kilometers (33.4% combined), acknowledging forecast model spread; SIPN outlooks due in coming weeks will provide updated ensemble medians ahead of the August-October resolution window.
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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