Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Best Prediction Markets UK Pick polygram.ink |
0% | 100% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | Open on Best Prediction Markets UK → |
Polymarket polymarket.com |
0% | 100% | 0% | Geo-blocked in US/UK/EU | USDC, on-chain | Open on Best Prediction Markets UK → |
Kalshi kalshi.com |
— | — | Up to 7% per trade | US-only, KYC required | USD | Open on Best Prediction Markets UK → |
Betfair Exchange betfair.com |
— | — | 2-5% commission | Full KYC from first trade | GBP / EUR | Open on Best Prediction Markets UK → |
Manifold Markets manifold.markets |
— | — | Play-money (mana) | None — play-money | Mana (no cash-out) | Open on Best Prediction Markets UK → |
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 Best Prediction Markets UK.
Active sub-markets
Market context
Shanghai Pudong International Airport’s highest temperature on 20 June will settle against a summer climate that usually puts this airport in the hot season by mid-June. WeatherSpark says June daily highs there rise through the month, with typical highs from about 77°F to 83°F and rare extremes below 69°F or above 92°F, while the hot season runs from 17 June to 16 September with average highs above 80°F[1][7]. That makes a 0% crowd-implied chance on the market look detached from the climatology, unless the contract is effectively pricing in a narrow band that traders think will miss by a wide margin.
Comparable readings from nearby Shanghai airfields underline how warm late-June conditions can still be, even with cloud, rain, or wind in the mix. BBC Weather’s Hongqiao observation on 20 June showed 28°C with 84% humidity and light rain, while AccuWeather’s Pudong current conditions showed 87°F RealFeel on a very humid, overcast day[3][4]. By contrast, meteoblue’s Pudong forecast pointed to a much cooler 65°F high for the following day, illustrating how quickly marine influence and rainbands can shift airport temperatures across short windows[2]. For a cross-platform read, sportsbook-style temperature lines are usually tighter and more weather-model driven, while prediction-market pricing can lag if traders are waiting on the same synoptic signal.
The main catalysts are the day’s local forecast updates, any change in rain timing, cloud cover, or onshore flow, and the airport’s actual noon-to-afternoon heating profile before the settlement window closes at 12:00 UTC. The resolution source is Wunderground’s Shanghai Pudong International Airport daily history page, so traders will watch whether the station’s recorded maximum is captured before that cut-off and whether showers or a sea breeze cap the peak[5]. NWS time-series access for ZSPD also indicates the station is instrumented for temperature tracking, which supports close monitoring of intraday observations as they are published[5].
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 Best Prediction Markets UK, 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
- Is this market available outside the US?
- Best Prediction Markets UK 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.
- What does it cost to trade on Best Prediction Markets UK?
- Zero. Best Prediction Markets UK routes every order to the live Polymarket order book; the only cost is the Polygon network fee, typically under $0.01 per transaction.
- 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.
- 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 Shanghai on June 20? on Best Prediction Markets UK
Live order book, 0% fees, USDC settlement in seconds.
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