Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via March Madness Predictions) Pick polygram.ink (preferred broker) |
74% | 26% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | See live odds → |
Polymarket (direct) polymarket.com |
74% | 26% | 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 |
|---|---|
| 25°C | 74% |
| 26°C | 23% |
| 27°C | 3% |
| 28°C | 1% |
| 20°C or below | 0% |
| 21°C | 0% |
| 22°C | 0% |
| 23°C | 0% |
| 24°C | 0% |
| 29°C | 0% |
| 30°C or higher | 0% |
Market context
Seoul is currently experiencing a sharp heat spike as temperatures climbed to 37.8°C on 8 July, marking the highest early-July reading ever recorded in the capital[7]. This extreme event occurs just as the monsoon season, which typically brings heavy rain and humidity between late June and mid-July, begins to wane[1]. While daily averages in July usually hover between 21°C and 28°C, recent data shows highs frequently reaching 30–32°C under strong sunshine[2][9]. The 0% crowd-implied probability for a specific temperature range likely reflects uncertainty about whether this record-breaking heat will persist or if the lingering monsoon moisture will trigger cooling showers before the 9 July settlement[1].
Traders must monitor immediate weather announcements from the Korea Meteorological Administration, particularly regarding precipitation probability and wind shifts that could alter the peak temperature[4]. Historical patterns indicate that once rain clears, rising temperatures combined with high humidity can create a steamy feel, potentially pushing recorded highs above the 34°C threshold if the sun remains intense[1]. The resolution depends entirely on the highest temperature recorded at Incheon International Airport, a coastal station that may experience different cooling effects compared to central Seoul[1]. With the Sinchon Water Gun Festival scheduled for late July, local heat management efforts may also influence urban temperature readings, though the airport station remains the primary metric[1]. Watch for real-time updates on Wunderground, as sudden cloud cover or rain showers could rapidly depress the peak temperature before the 12:00 UTC settlement window closes[2].
Methodology
Sports-specific comparison page for Highest temperature in Seoul on July 9?. 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
- 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.
- 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.
- Can I import form data and lineups?
- This page shows the live Polymarket quote as an implied probability. Form data and lineups must be researched separately via sports data providers (e.g. Soccerway, ESPN, FBref) — we surface the market probability, not the sport analysis.
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