Highest temperature in Seoul on June 15?

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Market context

The settlement hinges on the highest temperature reading at Incheon International Airport on 15 June 2026, measured in Celsius and resolved via Weather Underground's historical data. The 0% implied probability suggests the market crowd expects no outcome within the specified range—a signal worth examining against Seoul's actual June climatology.

Seoul's June temperatures typically peak between 28–32°C, with historical highs occasionally reaching 33–35°C during heat waves. The 15th falls mid-monsoon season, when cloud cover and humidity often suppress afternoon peaks compared to May or July. Historical records from Incheon Airport show June daily maxima rarely exceed 34°C; the settlement range structure likely reflects this baseline expectation. The crowd's zero probability implies either extreme confidence in a narrow outcome or uncertainty about which temperature bracket the market offers—a common driver of seemingly extreme odds in weather markets where the full range of options may not be immediately obvious to casual traders.

Traders should monitor the Korean Meteorological Administration's seasonal forecasts, particularly any early June heat advisories or anomalous pressure patterns that might signal an atypical warm spell. The East Asian monsoon onset timing, typically occurring in early-to-mid June, will be the primary catalyst affecting cloud cover and maximum temperatures. Any significant deviation from normal circulation patterns—such as a delayed monsoon or a high-pressure system lingering over the Korean peninsula—could push temperatures into ranges currently underpriced. Real-time weather model consensus from mid-May onwards will clarify whether the 15th sits within or outside historical norms for that location.

Methodology

This page is a comparison snapshot: one live quote (Polymarket), four reference venues with their key attributes, and a single execution path — every trade button routes to Who Will Win 2026, which mirrors the Polymarket order book directly.

Resolution & payout

Polymarket-based markets settle through the UMA Optimistic Oracle on Polygon. A proposer submits the outcome, a two-hour challenge window opens, and unchallenged proposals finalise the resolution. Payouts settle automatically in USDC the moment the result is final — no bookmaker, no delay.

Kalshi-based markets settle in USD via the CFTC-regulated clearinghouse. Betfair Exchange settles in GBP/EUR net of commission. Manifold is play-money and does not pay out real funds.

FAQ

Is this market available outside the US?

Who Will Win 2026 is available in most jurisdictions where Polymarket isn't directly accessible. Polymarket itself is geo-blocked in the US/UK/EU. Always check local regulations.

How does resolution work?

Through the UMA Optimistic Oracle on Polygon: a proposer submits the outcome, a two-hour challenge window opens, and USDC payouts settle automatically once the result is final.

What's the difference between YES and NO shares?

A YES share pays $1.00 if the event happens, $0 otherwise. A NO share pays $1.00 if the event doesn't happen. The market price between 0¢ and 100¢ is the implied probability.

How fast are USDC deposits?

Polygon credits deposits after 12 confirmations — usually under 30 seconds. Withdrawals follow the same path and land back in your wallet within minutes.

How reliable are the quoted odds?

The YES/NO percentages are the live mid-prices of the Polymarket order book. On deep markets they move every few seconds; on thinner ones you'll see short plateaus.