Highest temperature in London on July 9?

Platform comparison

Market context

London is currently gripped by an intense heatwave, with Thursday 9 July 2026 forecast to be the hottest day of the week, peaking at 33°C between 4pm and 7pm[4]. The Met Office has issued amber heat alerts for London from Wednesday 8 July until Sunday 12 July, confirming temperatures will remain above 30°C until at least Saturday 11 July[4]. Despite the crowd-implied probability of 0% for the market resolving to a specific range, historical patterns and current forecasts suggest a significant chance of hitting the 33°C threshold, as daytime highs are not expected to drop below 32°C throughout the week[4].

Traders should monitor the incoming thunderstorm risk, which models predict could begin late on 8 July and continue into 9 July, potentially bringing heavy rain and lightning that might disrupt the peak heat[3]. The heatwave is expected to break on Sunday when temperatures fall to 29°C, meaning the window for maximum heat is narrow and concentrated on Thursday and Friday[4]. Key dependencies include the exact timing of the storm onset and whether the humid, unstable atmosphere triggers downpours before the 33°C peak is recorded, as rapid weather changes are anticipated[3].

Sources: 1 · 2 · 3 · 4 · 5

Methodology

Sports-specific comparison page for Highest temperature in London on July 9?. 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.

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.

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.