Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via احتمالات كأس العالم) Pick polygram.ink (preferred broker) |
97% | 3% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | View on Polymarket → |
Polymarket (direct) polymarket.com |
97% | 3% | 0% | Geo-blocked in US/UK/EU | USDC, on-chain | View on Polymarket → |
Kalshi kalshi.com |
— | — | Up to 7% per trade | US-only, KYC required | USD | View on Polymarket → |
Betfair Exchange betfair.com |
— | — | 2-5% commission | Full KYC from first trade | GBP / EUR | View on Polymarket → |
Manifold Markets manifold.markets |
— | — | Play-money (mana) | None — play-money | Mana (no cash-out) | View on Polymarket → |
Outcome probabilities
Current market-implied probability for each outcome, from the live order book.
| Outcome | Probability |
|---|---|
| 25°C | 97% |
| 26°C | 2% |
| 21°C or below | 0% |
| 22°C | 0% |
| 23°C | 0% |
| 24°C | 0% |
| 27°C | 0% |
| 28°C | 0% |
| 29°C | 0% |
| 30°C | 0% |
| 31°C or higher | 0% |
Market context
London’s highest temperature on 31 July is being judged against a city record that has only broken into the high 30s a handful of times. The benchmark for the capital remains 40.2°C at Heathrow and St James’s Park on 19 July 2022, while 31 July has previously produced 37.8°C at Heathrow in 2020, the UK’s third hottest day on record.[6][2][1]
That history leaves room for a wide distribution around the low-to-mid 30s, but the tail risk is real when a heatwave peaks late in the month. London has also reached 37.8°C on a 31 July before, and Met Office coverage of recent extremes shows the city can run materially hotter than seasonal norms when synoptic conditions align.[2][1] With the market settling on the London City Airport Station reading from Wunderground, the exact station matters: an inland-style London heat spike can easily differ from a more exposed coastal or airport site.
Traders should watch the day’s official forecast updates, any late changes to the heat warning map, and the timing of cloud, wind and sea-breeze suppression across the capital. Recent UK coverage has already shown London pushing into the low 30s during July 2026, with Heathrow used as the headline gauge in Met Office and BBC reporting, which is the sort of setup that can shift the upper-end temperature bands quickly if conditions intensify or if afternoon cloud arrives earlier than expected.[13][16][3]
Methodology
Football-specific comparison page for توقع: Highest temperature in London 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
- 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.
- 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.
- 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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