Highest temperature in Seoul on June 23?

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Market context

The underlying real-world event is the highest temperature recorded at Incheon International Airport on 23 June 2026, measured in degrees Celsius. Polymarket prices this contract today with a 0% probability for the “YES” outcome, implying the market believes the temperature will not hit the specified threshold. This stark pricing contrasts with historical patterns where late June in Seoul often sees rising heat and humidity, with daily highs typically ranging from 83°F to 89°F (28°C to 32°C) [3].

Historical data shows that late June in South Korea frequently marks the transition into monsoon season, bringing both heavy rain and elevated temperatures [2]. While early June tends to be more comfortable, the latter half of the month can be noticeably hotter, with a higher chance of rain and humidity [1]. A comparable case is the recent market for Seoul’s 21 June high temperature, which surged to 89% for 27°C after a sharp price increase, reflecting strong trader confidence in rising heat [9].

Traders should monitor the Korea Meteorological Administration’s short-range forecasts and Wunderground’s daily updates for Incheon, as these are the official resolution sources [4]. Recent reports from TourRadar and DesignerJourneys highlight that monsoon season typically spans June to July, with intense sun and high humidity requiring hydration and sun protection [2]. Any sudden shifts in precipitation forecasts or temperature anomalies could significantly alter the conditional token pricing on Polygon, where USDC is used for settlement.

Sources: 1 · 2 · 3 · 4 · 5

Methodology

This page reviews Highest temperature in Seoul on June 23? across five venues. We show live odds for Polymarket-based markets (sourced from the Polygon order book); for other venues we list platform attributes, since the comparable contracts are not exposed via a public API on every venue. Every CTA points at Polymarket Scam? — the application we operate, where you trade directly against the Polymarket order book at 0% fees.

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

Where can I trade this market with the lowest fees?

On Polymarket Scam?, which mirrors the Polymarket order book at 0% fees. Kalshi charges up to 7% per trade; Betfair Exchange takes 2-5% commission on net winnings.

Is this market available outside the US?

Polymarket Scam? 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 does it cost to trade on Polymarket Scam??

Zero. Polymarket Scam? routes every order to the live Polymarket order book; the only cost is the Polygon network fee, typically under $0.01 per transaction.

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.