Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via Mundial 2026 Grupos) Pick polygram.ink (preferred broker) |
74% | 26% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | Live odds → |
Polymarket (direct) polymarket.com |
74% | 26% | 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 |
|---|---|
| 37°C | 74% |
| 38°C | 20% |
| 39°C | 3% |
| 36°C | 2% |
| 40°C | 1% |
| 35°C or below | 0% |
| 41°C | 0% |
| 42°C | 0% |
| 43°C | 0% |
| 44°C | 0% |
| 45°C or higher | 0% |
Market context
Madrid’s maximum at Barajas is likely to be set by a normal summer heat build-up rather than any one-off shock, and the market resolves on the *highest* reading logged during the day rather than the midday snapshot. That matters because Madrid regularly reaches the low-to-mid 30s Celsius in July, with average July highs around 33°C and daily maxima often sitting in that band[7][18].
Recent context points to a hot but not exceptional setup. AccuWeather’s Madrid forecast for 31 July shows a high near 92–96°F, while a Spanish outlet cited 38°C for the city on the same date, which would be enough to push the airport station into the upper 30s if verified on the day[1][4][6]. The broader historical frame is that Madrid’s standout extremes are far above normal, with the city’s recent benchmark highs around 40.7°C, but July day-to-day outcomes are usually well below that level[11][16].
For traders, the main catalysts are the live airport observations through the afternoon and whether the urban forecast is translated into an airport reading. Barajas can run a little differently from central Madrid, so the key dependency is the actual Wunderground station trace, not the city forecast alone. The market’s 0% implied YES makes the obvious risk a very hot afternoon still being priced as impossible, so any late surge towards the upper 30s would be the only meaningful path to a non-zero outcome[12][14][20].
Methodology
Football-specific comparison page for Pronóstico: Highest temperature in Madrid on July 31?. 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
- 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.
- 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.
- 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.
- 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.
- 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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