Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Who Will Win Pick polygram.ink |
0% | 100% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | Open on Who Will Win → |
Polymarket polymarket.com |
0% | 100% | 0% | Geo-blocked in US/UK/EU | USDC, on-chain | Open on Who Will Win → |
Kalshi kalshi.com |
— | — | Up to 7% per trade | US-only, KYC required | USD | Open on Who Will Win → |
Betfair Exchange betfair.com |
— | — | 2-5% commission | Full KYC from first trade | GBP / EUR | Open on Who Will Win → |
Manifold Markets manifold.markets |
— | — | Play-money (mana) | None — play-money | Mana (no cash-out) | Open on Who Will Win → |
Live odds for Polymarket-based markets come from the Polygon order book. Non-Polymarket venues show attributes only; clicking any row opens the market on Who Will Win.
Active sub-markets
Market context
Paris is trading as an **underdog** to post an exceptionally hot maximum on 22 June, with the market currently implying **0% for YES** and the crowd effectively pricing a temperature band below the most extreme outcomes. That leaves the consensus squarely on a more moderate high, with the contest really about whether the day tops out in the upper 30s Celsius or stalls a notch lower; in handicapper terms, the “favourite” is the mid-to-high 30s, while the contrarian angle is that a late-day spike could still surprise. June in Paris typically sees daily highs rising from about 69°F to 74°F, with extremes well above the norm being uncommon[2].
The historical frame matters because Paris has a finite, but real, tail risk for heat bursts: recent French summer heat has produced peaks in the 35°C to 38°C range, and Reuters reported on 19 June that the French weather agency expected temperatures to hit record highs from Sunday through at least Tuesday[3]. That makes the market’s near-zero pricing look aggressive if traders believe the broader heatwave narrative carries into the airport observation point, though the upside is constrained by the difference between city heat and the exact Paris-Le Bourget reading. The value spot, if any, sits with those willing to back a hotter-than-consensus print rather than assuming the market is fully efficient at pricing an afternoon maximum.
For traders, the key catalyst is the evolving forecast through the afternoon and the exact daily maximum as recorded at Paris-Le Bourget Airport in Wunderground’s history data, since the market resolves to that source rather than a city average or a generic Paris forecast. Watch for any official Météo-France updates, as well as whether temperatures have already reached their daily high before the settlement window closes; if the peak has not yet been set by midday UTC, late-afternoon heating can still matter. Reuters’ coverage of the incoming heat surge is the main recent signal that supports a bullish temperature case[3].
Methodology
This page is a comparison snapshot: one live quote (Polymarket), four reference venues with their key attributes, and a single execution path — every trade button routes to Who Will Win, which mirrors the Polymarket order book directly.
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?
- On Who Will Win, which mirrors the Polymarket order book at 0% fees. Kalshi charges up to 7% per trade; Betfair Exchange takes 2-5% commission on net winnings.
- Is this market available outside the US?
- Who Will Win is available in most jurisdictions where Polymarket isn't directly accessible. Polymarket itself is geo-blocked in the US/UK/EU. Always check local regulations.
- 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?
- Not under $1,500 of lifetime trading volume. Above that threshold, Who Will Win triggers a quick verification flow that finishes in minutes.
- 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.
Trade Highest temperature in Paris on June 22? on Who Will Win
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