توقع: Highest temperature in London on July 21?

Platform comparison

Market context

The highest temperature recorded at London City Airport on 21 July 2026 will determine the settlement range for this market. The 1% implied probability suggests traders expect a notably cool day relative to the specific thresholds being priced.

London's July climate typically produces daily highs between 20–24°C, with occasional peaks above 25°C during warm spells. The historical record for July at City Airport shows temperatures regularly in the low-to-mid 20s; extreme heat days exceeding 28°C occur but remain infrequent. The current crowd probability reflects scepticism that 21 July will fall into whichever upper temperature band this market has defined, implying the threshold being priced is substantially above typical July conditions. Comparable recent Julys have seen London experience mixed conditions—some years delivering sustained warmth, others interrupted by Atlantic systems bringing cooler air masses.

Traders should monitor the extended forecast from mid-July onwards, particularly tracking whether high-pressure systems establish over the UK or whether Atlantic low-pressure patterns dominate the period. The Met Office's long-range guidance, typically updated fortnightly, will provide the most reliable signal for seasonal trends approaching late July. Sea surface temperatures in the North Atlantic and the phase of atmospheric oscillations (NAO, AO) influence whether continental heat reaches southern England or cooler maritime air prevails. Any significant weather pattern shifts in early-to-mid July will sharpen probability estimates as settlement approaches.

Methodology

Football-specific comparison page for توقع: Highest temperature in London on July 21?. 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.

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.