Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via Who Will Win) Pick polygram.ink (preferred broker) |
99% | 1% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | Live odds → |
Polymarket (direct) polymarket.com |
99% | 1% | 0% | Geo-blocked in US/UK/EU | USDC, on-chain | Live odds → |
Kalshi kalshi.com |
— | — | Up to 7% per trade | US-only, KYC required | USD | Live odds → |
Betfair Exchange betfair.com |
— | — | 2-5% commission | Full KYC from first trade | GBP / EUR | Live odds → |
Manifold Markets manifold.markets |
— | — | Play-money (mana) | None — play-money | Mana (no cash-out) | Live odds → |
Outcome probabilities
Current market-implied probability for each outcome, from the live order book.
| Outcome | Probability |
|---|---|
| 32°C | 99% |
| 33°C | 1% |
| 25°C or below | 0% |
| 26°C | 0% |
| 27°C | 0% |
| 28°C | 0% |
| 29°C | 0% |
| 30°C | 0% |
| 31°C | 0% |
| 34°C | 0% |
| 35°C or higher | 0% |
Market context
The settlement hinges on the single highest temperature reading at Incheon International Airport on 14 July 2026, with the crowd currently assigning zero probability to any outcome. This reflects the market's nascent state rather than genuine certainty about Seoul's mid-summer weather. July in Seoul typically peaks between 28–32°C, though heat waves regularly push readings above 33°C. The 0% implied probability suggests traders have not yet engaged with the market's temperature brackets, leaving the consensus unformed.
Historical data from Incheon Airport shows July averages around 29°C, but extreme heat events occur frequently enough to merit serious consideration. In July 2018, Seoul recorded 39.6°C during an exceptional heat wave; July 2022 saw temperatures consistently above 32°C. The settlement window closes at noon UTC on 14 July, meaning only morning and early-afternoon readings will count if the market uses local time. This timing matters: Seoul's peak daily temperatures typically occur between 14:00 and 16:00 local time, so the noon cutoff may exclude the hottest hours.
The value angle depends entirely on which temperature bracket the market offers. If the brackets include a 32–35°C range, that represents the modal outcome for mid-July Seoul weather and should attract meaningful backing once traders notice the market. Conversely, if the highest bracket sits at 35°C or above, the underdog positioning reflects Seoul's actual climate risk. Traders should verify the exact temperature ranges available before committing capital, as the bracket structure determines whether consensus pricing reflects genuine weather forecasting or simply market inattention.
Methodology
This page is a comparison snapshot: one live quote, four reference venues with their key attributes, and a single execution path — every trade button routes to Who Will Win, which mirrors the Polymarket order book directly.
Resolution & payout
At resolution the UMA oracle takes over: a proposer posts the outcome with a bond, any token holder can dispute within two hours. Without dispute the result is accepted and the smart contract distributes USDC instantly.
On Kalshi (CFTC-regulated) resolution runs through their in-house clearing engine in USD. Betfair Exchange settles after match end in the account's local currency. Manifold pays no cash — only its in-platform "mana" currency.
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.
- What does Polymarket cost to trade?
- Polymarket itself charges 0% — the only cost is the Polygon network fee, typically under $0.01 per transaction. Off-chain venues like Kalshi or Betfair charge 2-7% commission.
- 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 Who Will Win trigger KYC only above $1,500 of lifetime trading volume; under that you trade pseudonymously with a single wallet address.
Trade Highest temperature in Seoul on July 14? on Who Will Win
Live order book, 0% fees, USDC settlement in seconds.
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