Highest temperature in Paris on June 26?

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Market context

On 26 June 2026, Paris-Le Bourget Airport is expected to record its highest daily temperature, a real-world event that will determine the outcome of a prediction market settling at noon the following day. In this market, a YES share represents a bet that the peak temperature will fall within a specific range (such as 41°C), while a NO share bets it will not; currently, the crowd assigns a 0% probability to the 41°C outcome, implying traders believe such extreme heat is unlikely despite the ongoing heatwave.

Historical context frames this low probability: Paris already broke its June record earlier this week with 38.4°C, and forecasts suggest temperatures are easing slightly by Friday, with highs around 37°C expected on Saturday [3]. While a heat dome has pushed temperatures to 44°C in other parts of France, the capital’s trajectory points toward a gradual cooling rather than a spike to 41°C, making the current 0% pricing consistent with recent meteorological trends [2][6].

Traders should monitor the official red alert extension status and the timing of the first raindrops, which are forecast for Saturday and could further suppress temperatures [3]. The primary catalyst is the Meteo France red alert, which covers 54 departments and indicates high temperatures will persist, yet the specific easing in Île-de-France suggests the 41°C threshold remains unattainable [4]. No new announcements are expected to reverse this cooling trend, reinforcing the market’s current stance.

Sources: 1 · 2 · 3 · 4 · 5

Methodology

This page reviews Highest temperature in Paris on June 26? across five venues. We show live odds for Polymarket-based markets (sourced from the Polygon order book); for other venues we list platform attributes, since the comparable contracts are not exposed via a public API on every venue. Every CTA points at Prediction Market UK — the application we operate, where you trade directly against the Polymarket order book at 0% fees.

Resolution & payout

Polymarket-based markets settle through the UMA Optimistic Oracle on Polygon. A proposer submits the outcome, a two-hour challenge window opens, and unchallenged proposals finalise the resolution. Payouts settle automatically in USDC the moment the result is final — no bookmaker, no delay.

Kalshi-based markets settle in USD via the CFTC-regulated clearinghouse. Betfair Exchange settles in GBP/EUR net of commission. Manifold is play-money and does not pay out real funds.

FAQ

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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.

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