Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via March Madness Predictions) Pick polygram.ink (preferred broker) |
53% | 47% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | See live odds → |
Polymarket (direct) polymarket.com |
53% | 47% | 0% | Geo-blocked in US/UK/EU | USDC, on-chain | See live odds → |
Kalshi kalshi.com |
— | — | Up to 7% per trade | US-only, KYC required | USD | See live odds → |
Betfair Exchange betfair.com |
— | — | 2-5% commission | Full KYC from first trade | GBP / EUR | See live odds → |
Manifold Markets manifold.markets |
— | — | Play-money (mana) | None — play-money | Mana (no cash-out) | See live odds → |
Outcome probabilities
Current market-implied probability for each outcome, from the live order book.
| Outcome | Probability |
|---|---|
| 27°C | 53% |
| 28°C | 22% |
| 26°C | 22% |
| 29°C | 4% |
| 30°C or higher | 1% |
| 20°C or below | 0% |
| 21°C | 0% |
| 22°C | 0% |
| 23°C | 0% |
| 24°C | 0% |
| 25°C | 0% |
Market context
Seoul is bracing for a potential June heatwave as meteorologists track an early surge of extreme temperatures across South Korea, with the Incheon International Airport station serving as the definitive resolution point for this market. The current 15% crowd-implied probability for the highest temperature to fall within the targeted range reflects uncertainty about whether this year will match the record-breaking intensity seen in recent summers.
Historical data frames this probability against a backdrop of escalating heat records, particularly the 2024 summer which the World Meteorological Organisation flagged as South Korea’s hottest ever, and the 2025 event where 59 cities recorded new all-time daily highs for June[1][2]. In Busan, the average daily temperature hit 26.2°C on 30 June 2025, surpassing the previous record of 25.8°C set just a day earlier, while Seoul itself reached 35.8°C during the same period[1][3]. These precedents suggest that a 15% probability may be undervalued if the current heat surge follows the trajectory of these recent extremes.
Traders should monitor daily updates from the Korea Meteorological Administration and Wunderground for real-time temperature readings at the Incheon station, as the settlement window closes precisely at 12:00 UTC on 29 June 2026[4]. The timing of the heatwave’s peak is critical; if the surge aligns with the 30 June 2025 pattern where temperatures continued to climb after the 29th, the market could resolve unexpectedly high. Recent reports from Chosun confirm that early heatwaves have already driven record-setting average temperatures nationwide, making the next 24 hours a decisive catalyst for the outcome[1].
Methodology
Sports-specific comparison page for Highest temperature in Seoul on June 29?. 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 or Manifold.
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.
- Can I bet on individual matches?
- Yes, Polymarket lists every major Premier League / Champions League / World Cup match as its own market. Liquidity varies — top matches like El Clásico or a semi-final often have six-figure pools, lower-league games closer to three-figure.
- 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.
- Which sports markets are available?
- Football (soccer) dominates — Champions League, World Cup, Premier League, La Liga, Bundesliga — followed by NFL, NBA, tennis Grand Slams, Formula 1, boxing/MMA. Resolution via official league source confirmation.
- 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.
Trade Highest temperature in Seoul on June 29? on March Madness Predictions
Live order book, 0% fees, USDC settlement in seconds.
Open live market →