Highest temperature in Madrid on August 2?

Platform comparison

Market context

Madrid’s heat looks broadly steady rather than volatile, with late-summer conditions expected to keep the city in the mid-30s Celsius and little sign of rain-driven cooling. Local forecasts for 2 August pointed to a dry, mostly clear day in Madrid, with highs around 35-36°C and a moderate high-temperature warning in the area, which helps explain why the market has clustered around the upper-30s threshold rather than any cooler band.[1][3][4]

That 0% implied chance on YES sits far below what comparable summer setups usually imply for Madrid, where August averages are hot and daytime maxima commonly sit well above 30°C.[7][9][16] In a city that has already experienced a 2026 heatwave under a strong subtropical ridge, traders tend to treat a forecast near 36°C as plausible but still sensitive to small shifts in cloud cover, wind and boundary-layer heating; that makes the upper-30s outcomes the most natural comparison set, rather than anything far from recent norms.[11][18]

The main catalysts are the final airport observations from Adolfo Suárez Madrid-Barajas and any late revisions to the day’s forecast path, especially if afternoon cloud, Saharan dust or a weaker-than-expected southerly flow trims the peak temperature. Market resolution depends on the highest reading recorded on the station’s Wunderground history page for the full day, so the key watchpoint is whether the early afternoon maximum is revised or confirmed against the afternoon and evening updates rather than the first daytime print.[5]

Sources: 1 · 2 · 3 · 4 · 5

Methodology

This page reviews Highest temperature in Madrid on August 2? across five venues. The live probability is the Polymarket mid-price, sourced directly from the on-chain Polygon order book; the comparison columns benchmark each venue on fee structure, KYC, settlement currency and payment rails. Every CTA routes to Prediction Today, which mirrors the Polymarket order book at 0% fees.

Resolution & payout

At resolution the UMA oracle takes over: a proposer posts the outcome with a bond, any token holder can dispute within two hours. Without dispute the result is accepted and the smart contract distributes USDC instantly.

On Kalshi (CFTC-regulated) resolution runs through their in-house clearing engine in USD. Betfair Exchange settles after match end in the account's local currency. Manifold pays no cash — only its in-platform "mana" currency.

FAQ

Is this market available outside the US?

Polymarket itself is geo-blocked in the US/UK/EU. Always check the legal status of prediction markets in your jurisdiction before trading.

What's the difference between YES and NO shares?

A YES share pays $1.00 if the event happens, $0 otherwise. A NO share pays $1.00 if the event doesn't happen. The market price between 0¢ and 100¢ is the implied probability.

What does Polymarket cost to trade?

Polymarket itself charges 0% — the only cost is the Polygon network fee, typically under $0.01 per transaction. Off-chain venues like Kalshi or Betfair charge 2-7% commission.

How fast are USDC deposits?

Polygon credits deposits after 12 confirmations — usually under 30 seconds. Withdrawals follow the same path and land back in your wallet within minutes.

Do I need to KYC for this market?

On Polymarket directly, no — it's wallet-based. Intermediary brokers like Prediction Today trigger KYC only above $1,500 of lifetime trading volume; under that you trade pseudonymously with a single wallet address.