Highest temperature in London on August 3?

Platform comparison

Market context

The market is about the **single highest air temperature** logged at London City Airport on 3 August, so the main question is whether the day peaks in the low, mid or upper 30s Celsius before the noon UTC settlement cut-off. That makes the 0% YES probability hard to read as a forecast of the weather itself; it more likely reflects a pricing mismatch, because London’s August climatology is usually far below extreme-heat territory, but short-lived spikes can still push a daily maximum into the low 30s.

For context, London’s long-run August daytime maximum is around **22°C**, and average August weather is usually much milder than the values that would move this market decisively.[11][10] At the same time, 2026 has already shown elevated UK warmth: the Met Office said summer 2026 was running **1.8°C above** the long-term average for mean temperature and **2.1°C above** average for daily maximums up to mid-July, while the BBC reported temperatures above 35°C elsewhere in England during the current heatwave cycle.[16][17] That combination means traders often anchor on whether a forecasted hot spell reaches London specifically, rather than on the broader national temperature picture.

The key catalysts are the final model runs, Met Office updates, and any overnight cloud or wind changes that affect the City Airport reading before noon UTC. Polymarket’s own market page cited forecasts of **31–32°C** under sunny conditions and noted a trader consensus around **30–31°C**, with the lead outcome sitting at **30°C** and 31°C close behind, which is the sort of distribution that can move quickly if the day trends a degree or two warmer or cooler.[2] London outcomes are especially sensitive to timing: an early-morning maximum can lock in before the market’s settlement window closes, while any later spike is irrelevant if the highest reading has already been published.

Sources: 1 · 2 · 3 · 4 · 5

Methodology

Entertainment-specific comparison page for Highest temperature in London on August 3?. Polymarket's live quote (Polygon order book) shows the award probability. For awards markets, Polymarket usually has the deepest liquidity; Betfair runs comparable markets for Oscars/Emmys; Manifold for Eurovision.

Resolution & payout

Entertainment markets settle on official award ceremony or show end. Polymarket uses UMA Optimistic Oracle with a source URL to the official award website. Two-hour dispute window, then smart-contract payout in USDC.

FAQ

Which entertainment markets are available?

Oscars / Academy Awards (Best Picture, Best Director, Best Actor/Actress), Eurovision Song Contest, Emmy Awards, Grammy Awards, Golden Globes, plus reality-TV outcomes (Bachelor, Survivor). Volume usually sits in the five- to six-figure range per market.

When do award markets resolve?

After the official announcement — e.g. Oscars ceremony end for Academy Awards markets, Eurovision final end for ESC markets. UMA Optimistic Oracle typically uses the official award website as the resolution source.

What was the top Oscar 2025 market?

Best Picture, with ~$2.8M volume on Polymarket. "Anora" started as an underdog at ~8% and closed at ~62% before the ceremony — the biggest single Oscar market swing since 2019.

How are reality-TV outcomes verified?

UMA Oracle uses the official show website or producer statement as the resolution source. Very narrowly defined markets (e.g. "Will X be voted off the island?") rely on the official show notes.

Are there politics-entertainment crossover markets?

Yes — e.g. "Will X be parodied on SNL?", "Who will host the next Oscars?". These have thinner liquidity but offer alpha for traders who read pop-culture and political worlds together.