Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via توقعات كورة) Pick polygram.ink (preferred broker) |
46% | 54% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | Open the market → |
Polymarket (direct) polymarket.com |
46% | 54% | 0% | Geo-blocked in US/UK/EU | USDC, on-chain | Open the market → |
Kalshi kalshi.com |
— | — | Up to 7% per trade | US-only, KYC required | USD | Open the market → |
Betfair Exchange betfair.com |
— | — | 2-5% commission | Full KYC from first trade | GBP / EUR | Open the market → |
Manifold Markets manifold.markets |
— | — | Play-money (mana) | None — play-money | Mana (no cash-out) | Open the market → |
Outcome probabilities
Current market-implied probability for each outcome, from the live order book.
| Outcome | Probability |
|---|---|
| 25°C | 46% |
| 24°C | 28% |
| 26°C | 16% |
| 23°C | 10% |
| 27°C | 4% |
| 22°C or below | 0% |
| 28°C | 0% |
| 29°C | 0% |
| 30°C | 0% |
| 31°C | 0% |
| 32°C or higher | 0% |
Market context
London's highest temperature on 18 August 2026 will be measured at London City Airport Station and resolved against the Daily Observations table on Weather Underground, with settlement occurring at midday on that date. The market currently reflects zero probability across all temperature bands, suggesting either incomplete pricing or expectation of unseasonably cool conditions for mid-August in the capital.
August temperatures at London City Airport historically cluster between 20–24°C for daily highs, with extremes rarely exceeding 28°C. The 30-year average high for mid-August sits around 23°C. Notably, London experienced 25.3°C on 18 August 2019 and 22.1°C on the same date in 2015, providing recent benchmarks. The 0% crowd probability appears misaligned with climatological norms unless traders anticipate an unusual weather system—perhaps Atlantic low pressure or persistent cloud cover—to suppress temperatures below historical ranges.
Traders should monitor long-range forecasts from the Met Office and European Centre for Medium-Range Weather Forecasts (ECMWF) as August approaches, particularly tracking jet stream positioning and any developing Atlantic weather patterns. The specific reliance on Weather Underground's Daily Observations table rather than summary figures introduces a technical resolution dependency; discrepancies between the two sources have historically occurred during rapid temperature swings or sensor transitions. Any forecast shift toward above-average warmth would likely trigger repricing across higher temperature bands.
Methodology
Football-specific comparison page for توقع: Highest temperature in London on August 18?. 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.
- 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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