Highest temperature in Paris on July 22?

Platform comparison

Market context

Paris should post a warm but not extreme high today, and the market is pricing that as a tight two-way between **25°C** and **26°C**, with the crowd-implied probability at **0% YES** for any separate binary framing and the range market showing no clear breakout favourite beyond that band[1]. For a handicapper, that makes the listed consensus the middle of the distribution rather than a genuine blow-out forecast: the market is effectively saying the peak is most likely to land in the mid-20s, with little appetite for either a cooler underdog outcome or a hotter contrarian spike.

Historically, that is the sort of setup where late-day heat, cloud cover and a sea-breeze-style moderation matter more than headline forecast highs. On comparable July setups around Paris, the final reading at Paris-Le Bourget often ends up a degree or so either side of the broad forecast range, so the value spot is usually not in chasing an extreme, but in judging whether the day can briefly overperform the consensus on sustained sunshine. Traders should watch the latest hourly forecast updates for Paris, especially any revisions to afternoon cloud, wind and convection risk, because the settlement source is the Paris-Le Bourget Airport Station reading on Wunderground and the final outcome depends on the day’s maximum, not the average[1].

Sources: 1

Methodology

This page reviews Highest temperature in Paris on July 22? 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 Who Will Win, which mirrors the Polymarket order book at 0% fees.

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 Who Will Win. 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 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.