Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via Best Prediction Markets) Pick polygram.ink (preferred broker) |
99% | 1% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | Live odds → |
Polymarket (direct) polymarket.com |
99% | 1% | 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 |
|---|---|
| 34°C | 99% |
| 28°C or below | 0% |
| 29°C | 0% |
| 30°C | 0% |
| 31°C | 0% |
| 32°C | 0% |
| 33°C | 0% |
| 35°C | 0% |
| 36°C | 0% |
| 37°C | 0% |
| 38°C or higher | 0% |
Market context
Taipei’s official high for 23 July will be set by the temperature recorded at Songshan Airport, so the key issue is whether the day reaches the mid-30s Celsius rather than merely the low 30s. The market is currently pricing a 0% YES outcome, which sits oddly against nearby venue pricing: Polymarket’s own contract page shows 34°C as the frontrunner at 44%, with 35°C close behind at 39%, implying the crowd there expects a hot afternoon rather than a cooler day.[3]
Seasonally, July in Taipei is typically one of the hottest and stickiest parts of the year, with daytime temperatures commonly cited in the 32–38°C range and high humidity.[2] That historical profile makes low-temperature buckets less plausible than in spring or autumn, but the exact settlement depends on the single station reading at the airport, not the broader city feel. A live weather snapshot from AccuWeather shows Taipei City currently clear and 78°F with very high humidity, which is consistent with a warm baseline, though it does not by itself lock in the day’s eventual maximum.[1]
For traders, the main catalysts are the morning-to-afternoon heat profile, cloud cover, and any passing showers that can cap the maximum at Songshan Airport. AccuWeather’s 10-day view already flags humid, partly sunny conditions with possible afternoon showers, which matters because brief rain or persistent cloud can pull the top reading down by a degree or two.[4] The present gap between the 0% YES market read and the more temperature-centred pricing on the exchange suggests the contract is being treated as stale, thin, or misaligned rather than in step with meteorological expectations.[3]
Methodology
This page is a comparison snapshot: one live quote, four reference venues with their key attributes, and a single execution path — every trade button routes to Best Prediction Markets, 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?
- Polymarket is geo-blocked in the US/UK/EU. The easiest 0%-fee broker into the same order book is Best Prediction Markets. Kalshi charges up to 7% per trade; Betfair Exchange takes 2-5% commission on net winnings.
- 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.
- What does Polymarket cost to trade?
- Polymarket itself charges 0% — the only cost is the Polygon network fee, typically under $0.01 per transaction. Off-chain venues like Kalshi or Betfair charge 2-7% commission.
- 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.
Trade Highest temperature in Taipei on July 23? on Best Prediction Markets
Live order book, 0% fees, USDC settlement in seconds.
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