توقع: Highest temperature in London on August 21?

Platform comparison

Market context

On 21 August 2026, the highest temperature recorded at London City Airport will determine this market's resolution, with measurements taken from Weather Underground's Daily Observations table rather than summary figures. The settlement window closes at midday UTC, capturing the full diurnal cycle through morning and early afternoon hours when peak temperatures typically occur in London.

Historical August temperatures at London City Airport show considerable variation depending on synoptic patterns. Between 2015 and 2024, 21 August highs ranged from 18°C during cooler, unsettled spells to 28°C in warm anticyclonic conditions. The 0% crowd probability suggests traders expect temperatures below the lowest available range bracket, though this reflects uncertainty about market construction rather than meteorological impossibility—August in London regularly produces days exceeding 20°C, with roughly one in three years seeing peaks above 25°C during this period.

The critical dependency is the large-scale atmospheric setup establishing itself in mid-August 2026. Traders should monitor extended-range forecasts from mid-July onwards, particularly whether high-pressure systems position over the British Isles or whether Atlantic low-pressure systems dominate. Sea surface temperatures in the North Atlantic and the phase of any residual jet-stream patterns will influence whether continental warm air reaches London or cooler maritime air prevails. The Met Office's monthly outlooks, typically issued around 20 July, will provide the first official seasonal guidance for late August conditions.

Methodology

Football-specific comparison page for توقع: Highest temperature in London on August 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.

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.

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.