Highest temperature in Madrid on July 24?

Platform comparison

Market context

Polymarket is pricing the Madrid airport maximum for 24 July as a relatively tight summer range, with **34°C** the current lead at **37%** and **35°C** close behind at **34%**. On-chain, traders are buying and selling USDC-denominated conditional tokens on Polygon, so the contract is effectively a live estimate of where the day’s recorded high at Adolfo Suárez Madrid-Barajas Airport is most likely to land.

The 0% implied probability on the broad **“YES”** framing should be read alongside Madrid’s July climate, not as a forecast of cool weather. July in Madrid is typically hot, with daytime temperatures often above **35°C** and very little rainfall, which makes the mid-30s the natural zone for this market to trade around. That also explains why the pricing is concentrated in adjacent outcomes rather than spread across the full ladder of temperature bands. [2][1]

For a trader, the main catalysts are the day’s actual heat build-up, any late-shifting forecast from Spanish or international weather services, and whether temperatures peak before the settlement cut-off at **12:00 UTC**. The market resolves from the highest temperature recorded at the airport station on Wunderground, so intraday updates matter more than a single morning forecast; a sharp change in cloud cover, wind, or a heat plume over central Spain can move the likely band quickly. Recent forecast material has pointed to persistent hot conditions across central Spain, including Madrid, with highs in the upper 30s to low 40s Celsius in some scenarios, which keeps the upper outcome bands relevant even if the market is still anchored around 34–35°C. [3][1]

Sources: 1 · 2 · 3

Methodology

This page is a comparison snapshot: one live quote, four reference venues with their key attributes, and a single execution path — every trade button routes to PolyGram, which mirrors the Polymarket order book directly.

Resolution & payout

Settlement runs on-chain. Polymarket's contract logic separates YES and NO shares as conditional tokens; at resolution the winning share lifts to $1.00 and the losing one to $0. The outcome input comes from the UMA Optimistic Oracle, which secures against bad resolution with a bond + dispute window.

Once finalised, the smart contract pays USDC to the holders' wallets within minutes — no withdrawal fees beyond Polygon network gas. Kalshi settles in USD via CFTC clearance, Betfair in account currency net of commission, Manifold in play-money mana with no cash-out.

FAQ

Where can I trade this market with the lowest fees?

Polymarket is geo-blocked in the US/UK/EU. The easiest 0%-fee broker into the same order book is PolyGram. Kalshi charges up to 7% per trade; Betfair Exchange takes 2-5% commission on net winnings.

How does resolution work?

Through the UMA Optimistic Oracle on Polygon: a proposer submits the outcome, a two-hour challenge window opens, and USDC payouts settle automatically once the result is final.

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.

Do I need to KYC for this market?

On Polymarket directly, no — it's wallet-based. Intermediary brokers like PolyGram 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.