Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via Who Will Win) Pick polygram.ink (preferred broker) |
100% | 0% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | Live odds → |
Polymarket (direct) polymarket.com |
100% | 0% | 0% | Geo-blocked in US/UK/EU | USDC, on-chain | Live odds → |
Kalshi kalshi.com |
— | — | Up to 7% per trade | US-only, KYC required | USD | Live odds → |
Betfair Exchange betfair.com |
— | — | 2-5% commission | Full KYC from first trade | GBP / EUR | Live odds → |
Manifold Markets manifold.markets |
— | — | Play-money (mana) | None — play-money | Mana (no cash-out) | Live odds → |
Outcome probabilities
Current market-implied probability for each outcome, from the live order book.
| Outcome | Probability |
|---|---|
| 37°C | 100% |
| 28°C or below | 0% |
| 29°C | 0% |
| 30°C | 0% |
| 31°C | 0% |
| 32°C | 0% |
| 33°C | 0% |
| 34°C | 0% |
| 35°C | 0% |
| 36°C | 0% |
| 38°C or higher | 0% |
Market context
Taipei Songshan Airport is currently overcast with light rain and 88% humidity, suppressing the chance of a record high on 12 July 2026. The crowd-implied probability sits at 0% YES for the highest temperature exceeding the market’s upper threshold, reflecting consensus that wet, cloudy conditions will keep temperatures well below extreme levels. Historically, July is Taipei’s hottest month, with an average high of 33°C (92°F) at Songshan, but actual peaks rarely breach 37°C unless under persistent clear skies and strong subsidence [2]. In July 2025, similar overcast and rainy patterns kept daily highs near 30–31°C, far below seasonal extremes [1].
The key catalyst for traders is the persistence of rain showers forecast through the afternoon, with 102 mm of precipitation expected and winds at 20 m/s, which will further limit solar heating [10]. The Central Weather Administration reports an apparent temperature of 35°C despite a measured 29.8°C, but cloud cover and rain will likely prevent any spike toward 37°C or higher [7]. Traders should monitor real-time METAR updates from RCSS and Wunderground’s hourly history as the settlement window closes at 12:00 UTC; any sudden clearance of clouds could shift odds, though current data suggests no value in betting YES at 0% [4]. The contrarian angle is negligible given the depth of moisture and cloudiness, making the 0% price a fair reflection of physical constraints.
Methodology
Methodologically we separate two layers: the live probability (Polymarket mid-price) and the platform attributes (fee, KYC, settlement currency, payment rails). That keeps the comparison honest — a single canonical probability across the row, with the venue-by-venue trade-offs spelt out in the columns next to it.
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
- 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.
- 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.
Trade Highest temperature in Taipei on July 12? on Who Will Win
Live order book, 0% fees, USDC settlement in seconds.
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