Highest temperature in Paris on July 7?

Platform comparison

Market context

A new heat dome is settling over Île-de-France, pushing Paris toward its hottest day of the early week on Tuesday, 7 July 2026. Météo-France forecasts highs near 36°C under mostly sunny skies, well above seasonal norms, though the odds of matching the extreme end-June heatwave remain low[1]. This current probability of 0% YES for the highest temperature range appears to be a mispricing, as consensus short-range ensemble models indicate a high probability of a maximum between 34–36°C, with 33°C currently the frontrunner at 56%[2].

Historical context from the late June 2026 European heatwaves shows France recording temperatures as high as 44.3°C in Pissos, establishing a precedent for extreme July peaks despite the current forecast suggesting a slightly milder event[8]. Traders should watch the evolution of the heat dome, which Météo-France describes as still uncertain, as this is the primary dependency for whether temperatures breach the 36°C threshold or dip lower[1]. While some YouTube weather alerts suggest highs could reach 41°C, the official agency maintains a more conservative outlook, creating a value spot for contrarian bets on the upper temperature ranges if the dome intensifies unexpectedly[3]. The market currently favours the 33°C outcome, leaving the 34°C and 35°C ranges as potential underdogs with significant value if the heat persists.

Sources: 1 · 2 · 3 · 4 · 5

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 Who Will Win 2026, which mirrors the Polymarket order book directly.

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

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 Who Will Win 2026. Kalshi charges up to 7% per trade; Betfair Exchange takes 2-5% commission on net winnings.

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.

Do I need to KYC for this market?

On Polymarket directly, no — it's wallet-based. Intermediary brokers like Who Will Win 2026 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.