Highest temperature in Seoul on July 14?

Platform comparison

Market context

The settlement hinges on the single highest temperature reading at Incheon International Airport on 14 July 2026, measured in Celsius. Polymarket currently prices this contract at 0% YES, reflecting either extreme confidence in a specific temperature band or minimal trading activity establishing a floor. The resolution mechanism ties directly to Wunderground's historical weather database for that station, making the outcome deterministic once the date passes and data is published.

Seoul's July climate sits firmly within the East Asian summer monsoon season, when daily highs routinely exceed 30°C. Historical records from Incheon show July temperatures clustering between 28–32°C on average, with occasional peaks above 33°C during heat waves. The 0% probability assigned to whichever range this market covers suggests traders have already concentrated their positions elsewhere, or the range itself falls outside typical July extremes for the region. Comparable July days at Incheon over the past decade provide the baseline: extreme heat events pushing toward 35°C occur roughly once per decade, whilst readings below 25°C are exceptionally rare.

Traders should monitor seasonal forecasts released by the Korea Meteorological Administration in late June, which typically issue outlooks for July heat patterns. Any advisory for an unusual heat dome or tropical system affecting the Korean peninsula in mid-July could shift market pricing. Real-time weather tracking from mid-July onwards becomes the practical catalyst, as traders adjust positions based on actual atmospheric conditions materialising in the days leading to settlement.

Methodology

Methodologically we separate two layers: the live probability (Polymarket mid-price) and the platform attributes (fee, KYC, settlement currency, payment rails). That keeps the comparison honest — a single canonical probability across the row, with the venue-by-venue trade-offs spelt out in the columns next to it.

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?

Polymarket itself is geo-blocked in the US/UK/EU. Always check the legal status of prediction markets in your jurisdiction before trading.

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.

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.

Do I need to KYC for this market?

On Polymarket directly, no — it's wallet-based. Intermediary brokers like PolyGram trigger KYC only above $1,500 of lifetime trading volume; under that you trade pseudonymously with a single wallet address.

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.