Highest temperature in Madrid on July 31?

Platform comparison

Market context

The market turns on the hottest reading recorded at Madrid-Barajas Airport before the settlement window closes, so the relevant question is whether the day’s peak ends up in a low, mid, or upper temperature band rather than the exact number. Madrid is in a sustained summer heat pattern: recent July guidance shows daily highs around the low-to-mid 30s °C, while a same-day Spanish forecast put Madrid at a maximum of 38°C with no rain expected. [7][4]

That leaves the current 0% yes price as a strong signal only if the contract is set on an unusually high range, because comparable Madrid summer readings often cluster near the mid-30s °C and extreme citywide spikes are much rarer. The capital’s modern record high is 40.7°C, reached on several separate dates, which shows that upper-30s and low-40s outcomes are possible, but not the modal result. [17][11][16]

For traders, the key catalysts are the midday and early afternoon observations at the airport station, since the market settles on the highest temperature recorded for the day, not the forecasted maximum. Any late-afternoon surge, local heat build-up, or an updated airport observation can still shift the final band, while a modest underperformance versus the forecast would keep the result anchored in the lower temperature ranges. [4][12]

Sources: 1 · 2 · 3 · 4 · 5

Methodology

Entertainment-specific comparison page for Highest temperature in Madrid on July 31?. 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

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.

How accurate are award predictions?

Variable. Industry-predictable awards (Oscar Best Picture) have high market accuracy (Brier ~0.15). Reality-TV outcomes with small markets carry more noise. Eurovision is notorious for market upsets due to bloc voting.

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.

Who can trade Eurovision markets?

Polymarket is globally accessible but geo-blocked in select jurisdictions — traders there use broker frontends with a different geo footprint to reach the order book. Eurovision markets have strong European liquidity; German/Austrian/Swiss flow often drives consensus.

Is entertainment trading worth the effort?

Niche, but lucrative for experts. Award markets have fewer informed traders than political markets; combining industry expertise (film, music) with active research often surfaces mispricings. Volume cap: large bets move the market.