Will the minimum Arctic sea ice extent this summer be between 4.6m & 4.8m square kilometers?
Probability
6¢
1h
+0.5pp
24h
+0.0pp
24h Vol
$28.00
Liquidity
$1.5K
Canonical status
confidence: highSource status (Polymarket)
Derived status (Orrery)
Reason
Active market, expiry beyond the near-expiry window.
Resolution & Risk
LOW risk- End date
- Oct 1, 2026
- UMA status
- n/a
- Resolution source
- Primaryto the minimum Arctic sea ice extent for all days between August 1, 2026 and October 1, 2026, as published by the NationLinkTypeAmbiguous wordingConfidenceextracted · low
- Market type
- Multi-outcome (neg-risk)
- Part of a multi-outcome event (neg-risk): only one market can resolve YES.
Probability (last 7 days)
+1.0pp 7dWhy did it move?
Structured · 2 factors- 01Active signal
Resolution-risk observation firing
Resolution source is ambiguous or relies on public-figure statements — verify before treating price as the market view.
- 02Liquidity
Thin liquidity
Only $1.5k of visible book — small orders can move the line. Treat the probability as a soft estimate.
What to track next
- Verify the resolution source on this page — exchange feed, official release, news consensus — before treating any move as new information.
Verification actions only — never trade recommendations.
Each factor is grounded in a single named metric you can verify on this page — probability, volume, liquidity, signal, resolution state. No predictions, no prose hallucinations.
Resolution & Risk
LOW risk- End date
- Oct 1, 2026
- UMA status
- n/a
- Resolution source
- Primaryto the minimum Arctic sea ice extent for all days between August 1, 2026 and October 1, 2026, as published by the NationLinkTypeAmbiguous wordingConfidenceextracted · low
- Market type
- Multi-outcome (neg-risk)
- Part of a multi-outcome event (neg-risk): only one market can resolve YES.
Timeline
critical · price · trade flowCritical
- Oct 1, 00:00 UTCScheduled resolutionLOW
Market resolves in 3252.4h
- 11:33SignalLOW
Resolution risk
Resolution source is ambiguous or relies on public-figure statements — verify before treating price as the market view.
Price movement
+0.0pp over the last 24h, now 6¢.
Active signals
Recent Trades
No recent trades visible from the Data API for this market. That usually means liquidity is thin or this market is between event windows.
Related Markets
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Market Description
This market will resolve according to the minimum Arctic sea ice extent for all days between August 1, 2026 and October 1, 2026, as published by the National Snow and Ice Data Center. 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.
Why this category?
confidence: lowCategory
Source
Reason
No override, sports marker, rule, or upstream hint matched. Market is unclassified — the keyword rules need an entry for this topic.
Categories come from a deterministic engine: manual overrides (highest priority) → sports hard markers → event-tag rules → keyword rules → Gamma category hint → default. The engine is versioned in category-overrides.ts; methodology lives at /methodology.
FAQ — questions readers actually ask
What is the current Polymarket probability for "Will the minimum Arctic sea ice extent this summer be between 4.6m & 4.8m square kilometers?"?
As of Mon, 18 May 2026 11:33:31 GMT, YES is priced at 6% implied probability on Polymarket. The price changed +0.0pp in the last 24 hours, +0.5pp in the last hour, and +1.0pp in the last 7 days.
When does this market resolve?
This market resolves by Oct 1, 2026 (2026-10-01T00:00:00.000Z). Resolution is determined from the market description on Polymarket.
What source determines the outcome?
Resolution is sourced from the market description on Polymarket. Polymarket's UMA optimistic oracle is the final settlement layer; if the published source is ambiguous, UMA tokenholders adjudicate. Source-extraction confidence is shown in the Resolution & Risk block above.
How much is being traded on this market?
$28.00 of trading volume in the last 24 hours. Lifetime volume on Polymarket: $3.0K. Open liquidity in the YES/NO orderbooks: $1.5K. Spread between best bid and best ask: 1.0¢.
Is this a trade recommendation?
No. Orrery describes — never predicts. Every signal on this market carries explicit Evidence, Backtest, and Action tiers. The Action is always one of: Watch only, Inspect timeline, Create alert, Verify source, or Ignore — never Buy or Sell. The probability above is the market's collective implied probability, not a forecast Orrery is publishing.
How fresh is this data and where does it come from?
This page revalidates from the public Polymarket APIs every 30 seconds. Probability and 24h-change come from Gamma; the chart series comes from the CLOB orderbook history; trade and holder data come from the Data API. The fetched-at timestamp on each block tells you exactly how old the underlying upstream pull was.
Alerts
In-app banners fire as soon as a rule is satisfied. Email digests are wired to a server-side cron and continue while your tabs are closed. Telegram and Discord are planned — every existing rule will keep working as channels light up.