Pronóstico: Highest temperature in Seoul on July 1?

Platform comparison

Market context

The underlying real-world event is the highest temperature recorded at Incheon International Airport on 1 July 2026, measured in degrees Celsius. Polymarket currently prices the "YES" outcome for this specific contract at 0%, yet the conditional tokens on Polygon reveal a frontrunner of 30°C at 58% implied probability, with 29°C trailing at 32% [1]. This stark divergence between the binary "YES" price and the distributional market suggests traders are betting on a specific range rather than a simple threshold, while USDC liquidity flows indicate strong confidence in the 30°C outcome despite the zero per cent binary price.

Historical data frames this probability by showing that South Korea’s July weather is typically hot and humid, with daily average highs closing to 30°C and humidity levels often exceeding 80%, making temperatures feel like over 34°C at midday [3]. The monsoon season (Jangma) runs from late June to mid-July, bringing concentrated, heavy rainfalls that can temporarily suppress peak temperatures, yet recent forecasts for the Greater Seoul region have shown highs reaching 36°C on 8 and 9 July, confirming the potential for extreme heatwaves [8]. The current 0% binary price likely reflects a misunderstanding of the range-based resolution, as the climate data consistently supports temperatures near or above 30°C during this period [9].

Traders should monitor the Korea Meteorological Administration’s short-range forecasts for immediate updates on cloud cover, precipitation probability, and wind patterns, which are critical dependencies for peak temperature formation [7]. The Sinchon Water Gun Festival in late July, while not on 1 July, signals the broader summer trend of high humidity and intense sun exposure that characterises the season [3]. Additionally, watch for any official heatwave announcements from the KMA, as these often precede record-breaking days, and track real-time Wunderground data for Incheon to validate if the market’s 30°C consensus aligns with the live temperature readings as the settlement window approaches [10].

Sources: 1 · 2 · 3 · 4 · 5

Methodology

This page reviews Pronóstico: Highest temperature in Seoul on July 1? across five venues. The live probability is the Polymarket mid-price, sourced directly from the on-chain Polygon order book; the comparison columns benchmark each venue on fee structure, KYC, settlement currency and payment rails. Every CTA routes to Polymarket Argentina, which mirrors the Polymarket order book at 0% fees.

Resolution & payout

Settlement runs on-chain. Polymarket's contract logic separates YES and NO shares as conditional tokens; at resolution the winning share lifts to $1.00 and the losing one to $0. The outcome input comes from the UMA Optimistic Oracle, which secures against bad resolution with a bond + dispute window.

Once finalised, the smart contract pays USDC to the holders' wallets within minutes — no withdrawal fees beyond Polygon network gas. Kalshi settles in USD via CFTC clearance, Betfair in account currency net of commission, Manifold in play-money mana with no cash-out.

FAQ

Where can I trade this market with the lowest fees?

Polymarket is geo-blocked in the US/UK/EU. The easiest 0%-fee broker into the same order book is Polymarket Argentina. Kalshi charges up to 7% per trade; Betfair Exchange takes 2-5% commission on net winnings.

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.