Pronóstico: Highest temperature in Paris on July 26?

Platform comparison

Market context

Polymarket is pricing the Paris-Le Bourget Airport reading very low on the day, with the contract currently showing **0% YES** even though the live book elsewhere on the market page has the front outcomes clustered around the mid-20s Celsius. That matters because settlement here depends on the **highest temperature recorded at Paris-Le Bourget Airport Station** on 26 July, not on a citywide average or a headline forecast, and the market resolves using **Wunderground** data with traders holding **conditional tokens** settled in **USDC on Polygon**.

For context, July in Paris is usually warm rather than extreme: one July forecast overview puts typical highs around **25°C** with lows near **16°C**, while a separate July guide gives a broader historical range for daily highs of roughly **20°C to 43°C**. That combination makes the market behave like a weather-tail contract: most days cluster in the low-to-mid 20s, but a brief heat spike at the airport can move the settlement outcome sharply higher. The current zero price suggests traders are assigning almost no weight to an outcome above the listed threshold, which is unusual if the day’s actual maximum is still being measured before the **12:00 UTC** settlement window closes.

A trader watching this market should focus on the latest Paris-area forecasts, any French heat alerts, and whether the afternoon warming peak has already occurred before the market cut-off. Paris weather guidance for summer heat repeatedly highlights the midday-to-afternoon window as the period when highs are typically set, so the timing of cloud cover, wind shift, or thunderstorm development can matter more than the morning reading. If updated forecasts or official heat notices indicate a short-lived spike, that would be the main catalyst for repricing; if not, the contract will usually trade as a low-volatility range bet anchored to the airport station’s observed maximum.

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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 Polymarket Qué Es, 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

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.

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