Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via Kalshi UK) 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 |
|---|---|
| 36°C | 100% |
| 29°C or below | 0% |
| 30°C | 0% |
| 31°C | 0% |
| 32°C | 0% |
| 33°C | 0% |
| 34°C | 0% |
| 35°C | 0% |
| 37°C | 0% |
| 38°C | 0% |
| 39°C or higher | 0% |
Market context
The real-world event at stake is the highest temperature recorded on 1 July 2026 at Taipei Songshan Airport, measured in degrees Celsius and sourced from Wunderground. On Polymarket today, the contract for "Highest temperature in Taipei on July 1?" shows 36°C as the frontrunner at 37% probability, with 35°C trailing at 35%, while the market currently assigns 0% to a "YES" outcome for any specific range below these thresholds. This pricing reflects active on-chain trading using USDC on the Polygon network, where conditional tokens are being bought and sold to express views on the likely temperature band.
Historically, July in Taipei falls within the hot season, which runs from 8 June to 16 September, with average daily highs consistently above 87°F (30.6°C). Recent data shows daytime temperatures in July typically range between 32°C and 38°C, and May 2026 already saw a record high of 38.3°C in Taipei, marking the hottest day since the station’s records began. The warmest average day at Songshan Airport occurs on 21 July at 34.0°C, suggesting that 36°C is a plausible peak for early July, especially given the current humid and sunny conditions forecast for today.
Traders should monitor daily weather updates from the Central Weather Administration and Wunderground, particularly afternoon rain forecasts that could suppress peak temperatures. AccuWeather currently predicts 95°F (35°C) for 1 July with afternoon rain, but a shift to clearer skies could push temperatures higher. A recent report from Taiwan Plus News highlights how rapidly temperatures can spike in Taipei, with 38.3°C recorded in May, underscoring the volatility traders must account for when assessing conditional token positions ahead of the 2026-07-01 settlement.
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
Settlement runs on-chain. Polymarket's contract logic separates YES and NO shares as conditional tokens; at resolution the winning share lifts to $1.00 and the losing one to $0. The outcome input comes from the UMA Optimistic Oracle, which secures against bad resolution with a bond + dispute window.
Once finalised, the smart contract pays USDC to the holders' wallets within minutes — no withdrawal fees beyond Polygon network gas. Kalshi settles in USD via CFTC clearance, Betfair in account currency net of commission, Manifold in play-money mana with no cash-out.
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 Kalshi UK. 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.
- 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.
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