Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via Mundial 2026 Grupos) Pick polygram.ink (preferred broker) |
37% | 63% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | Live odds → |
Polymarket (direct) polymarket.com |
37% | 63% | 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 |
|---|---|
| 28°C | 37% |
| 27°C | 30% |
| 26°C | 14% |
| 29°C | 9% |
| 25°C | 3% |
| 30°C | 3% |
| 31°C or higher | 3% |
| 21°C or below | 0% |
| 22°C | 0% |
| 23°C | 0% |
| 24°C | 0% |
Market context
The underlying event is the highest temperature recorded on 30 June 2026 at Incheon International Airport, the standard proxy for Seoul’s heat, measured in degrees Celsius. Historical data shows June in Seoul typically peaks between 19°C and 28°C, with the final ten days of the month averaging the highest highs of the month at 21.8°C[8]. The absolute maximum recorded so far this June was 34.0°C on 19 June[9], yet such extremes are rare and usually tied to short-lived heat spikes before the monsoon arrives. Given that the crowd-implied probability for any temperature above the typical range sits at 0% YES, the market correctly reflects that June is warm but not extreme, and the monsoon season—starting late June to mid-July—will likely suppress sustained high temperatures[2].
Traders should monitor the Korea Meteorological Administration’s short-range forecasts for any sudden heat advisories or shifts in humidity patterns, as these can trigger brief temperature surges even during the rainy season[6]. Recent travel guidance notes that from late June, the rainy season may begin, increasing the likelihood of afternoon showers that cool daytime highs[5]. Watch for official announcements on monsoon onset timing, as an early start would further reduce the chance of temperatures exceeding 30°C. No major heatwaves have been forecast for the final days of June, and with humidity rising but not yet exhausting, conditions remain conducive to moderate rather than extreme heat[2].
Methodology
Football-specific comparison page for Pronóstico: Highest temperature in Seoul on June 30?. Polymarket's live quote (Polygon order book) plus platform attributes for the three reference venues. Sports markets reward liquidity — Polymarket and Betfair are materially deeper than Kalshi (US-focused) or Manifold (play-money).
Resolution & payout
Sports markets typically settle on official final-whistle plus league confirmation. Polymarket uses UMA Optimistic Oracle with a source URL per contract — usually official league data feeds or ESPN/Soccerway. Two-hour dispute window, then smart-contract payout in USDC.
FAQ
- Are prediction markets better than sports betting?
- Prediction markets tend toward tighter odds than bookmakers because they use peer-to-peer exchange rather than bookmaker margin. On major matches, Polymarket quotes typically sit 2-5% closer to the true probability model than bet365 or DraftKings.
- When do sports markets resolve?
- Typically within hours of the official final whistle. Polymarket uses UMA Optimistic Oracle with source URLs pointing at official league data feeds — e.g. the Premier League for EPL markets, UEFA for Champions League, FIFA for World Cup.
- What are live sports odds on Polymarket?
- Some top-tier matches stay open during play — you can trade the half-time probability in the 70th minute. Polymarket mid-prices update second-by-second; any frontend mirroring the order book shows the same movement.
- How fast do sports winnings settle?
- Once the official league outcome is logged in the UMA Oracle (typically 1-2 hours after the final whistle), Polymarket's smart contract triggers USDC payout. To your wallet within minutes.
- What's the difference between match odds and outright odds?
- Match odds cover a single game ("Bayern beats BVB"). Outright odds are long-term aggregates ("Bayern wins the league"). Outright markets have deeper liquidity; match markets have faster resolution.
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