Highest temperature in Madrid on August 2?

Platform comparison

Market context

The relevant real-world event is the **highest temperature recorded at Adolfo Suárez Madrid-Barajas Airport** on 2 August, measured in Celsius and settled from Wunderground’s daily history page. For programme-driven traders, the key operational point is that the market is not about the forecast headline for central Madrid, but the station-specific daily maximum, so any model or bot should key off the airport observation feed and the exchange’s resolution rules rather than citywide weather summaries.

On comparable summer setups, Madrid’s August maxima often sit in the mid-30s Celsius, which makes a 0% crowd price for a YES bucket striking only if the market is looking at a narrow threshold or a low-probability range rather than the raw daily maximum. Recent Spanish forecasts for 2 August pointed to clear or mostly clear skies and roughly 35–36°C in Madrid, with some advisory-level heat warnings around 36°C, while Reuters noted Spain’s first official heatwave of 2026 had already pushed Madrid close to 40°C in June[1][3][4][12]. That historical context matters because airport readings can run a little differently from city-centre forecasts, and a one-degree miss can flip which range settles.

The main catalysts to watch are the afternoon heating cycle, any late-day cloud build, and whether Saharan air advection or a stronger-than-expected subtropical ridge pushes the maximum above forecast bands. A practical workflow for power users is to monitor live METAR-style airport observations, the day’s local forecast updates, and the Wunderground history page after the observation window opens, then use conditional orders or automated triggers if the live maximum approaches an adjacent bucket.

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 Kalshi Fees, 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.

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 Kalshi Fees trigger KYC only above $1,500 of lifetime trading volume; under that you trade pseudonymously with a single wallet address.

How reliable are the quoted odds?

The YES/NO percentages are the live mid-prices of the Polymarket order book. On deep markets they move every few seconds; on thinner ones you'll see short plateaus.