Highest temperature in Paris on July 24?

Platform comparison

Market context

Paris will experience some form of weather on 24 July 2026, and the highest temperature recorded at Le Bourget Airport that day will fall into one of several defined ranges. The settlement hinges on a single data point: the peak reading from Wunderground's historical weather archive for that specific station and date. Traders need to understand that Le Bourget, located northeast of central Paris, sits in an urban-industrial zone and may record temperatures 1–2°C higher than central Paris proper due to the urban heat island effect.

July in Paris typically sees highs between 24–27°C, though heat waves can push readings above 30°C. The 2003 European heat wave saw Paris reach 40°C; more recently, August 2023 brought peaks near 32°C across the region. The 0% crowd probability suggests either extreme confidence in a specific temperature band or insufficient liquidity to establish meaningful odds. Historical volatility matters here: a single weather system or high-pressure system stalling over northern France could shift outcomes by 5–8°C compared to climatological norms.

Traders building automated resolution workflows should note that Wunderground's historical data occasionally requires manual verification against Météo-France's official records, particularly for edge cases near range boundaries. The settlement window closes at midday UTC on 24 July, meaning real-time temperature monitoring becomes critical in the final hours. Conditional orders tied to European weather model updates (ECMWF, Météo-France) released on 22–23 July would capture the most recent forecast shifts before the event crystallises.

Methodology

This page reviews Highest temperature in Paris on July 24? 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 Polymarket Review UK, which mirrors 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

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 Polymarket Review UK. 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.

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.