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
Shenzhen's highest temperature on 27 May 2026 will be measured at Bao'an International Airport Station and resolved against historical weather data. The crowd currently assigns zero probability to any outcome, suggesting either incomplete market formation or uncertainty about which temperature band will resolve. May in Shenzhen sits within late spring, transitioning toward the subtropical summer season, with typical daily highs ranging from 28°C to 32°C during this period.
Historical May data from Shenzhen shows considerable consistency. Over the past decade, maximum temperatures on 27 May have clustered between 29°C and 33°C, with outliers rare but documented. The 2015 reading reached 34°C, whilst 2019 recorded 28°C. This narrow band—roughly 28–34°C—represents the practical range for settlement. The zero-probability reading suggests traders may be awaiting clearer range definitions or waiting for seasonal forecasts to sharpen before committing capital.
The relevant catalyst is the China Meteorological Administration's extended outlook for late May 2026, typically published in early May. Tropical weather systems occasionally affect southern China during this window, though May remains pre-monsoon. Any significant high-pressure system stalling over the region could push temperatures toward the 33–35°C range, whilst cloud cover or moisture from the South China Sea would suppress readings toward 28–30°C. Current atmospheric patterns favour near-normal conditions, but seasonal forecasts remain the primary information dependency for traders seeking an edge.
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.
- What does it cost to trade on Who Will Win?
- Zero. Who Will Win 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.
- 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 Shenzhen on May 27? on Who Will Win
Live order book, 0% fees, USDC settlement in seconds.
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