Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via March Madness Predictions) Pick polygram.ink (preferred broker) |
67% | 33% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | See live odds → |
Polymarket (direct) polymarket.com |
67% | 33% | 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 |
|---|---|
| 33°C | 67% |
| 34°C | 21% |
| 32°C | 10% |
| 31°C | 3% |
| 35°C | 1% |
| 30°C or below | 0% |
| 36°C | 0% |
| 37°C | 0% |
| 38°C | 0% |
| 39°C | 0% |
| 40°C or higher | 0% |
Market context
Madrid’s July heat makes a high temperature in the mid-30s Celsius the central case, and the market is currently leaning that way rather than towards an extreme spike. The crowd has 34°C as the leading outcome at 37%, with 35°C close behind at 34%, which fits the broad July pattern of hot afternoons, very limited rainfall, and a relatively dry atmosphere in the city. [1][2]
For context, Madrid’s July climate is normally built around strong sunshine and persistent warmth, with average daily solar energy staying essentially flat through the month and July rainfall usually close to zero. That matters because the market settles on the day’s *highest* reading at Madrid-Barajas Airport, so even a modest uptick from the usual pattern can shift the outcome into 35°C or above, while cloud cover or a fresher northerly flow would keep the top end lower. [2][3]
The main catalysts are the latest forecast updates from local and national forecasters, plus any heatwave, wind, or cloud changes affecting central Spain in the run-up to the afternoon peak. Media coverage has pointed to another strong spell of heat across central Spain, with Madrid potentially reaching the high-30s Celsius in a more intense setup, so traders should watch for forecast revisions rather than assuming a static summer norm. [4]
Methodology
Sports-specific comparison page for Highest temperature in Madrid on July 24?. 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.
- 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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