Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via Polymarket Legal UK) Pick polygram.ink (preferred broker) |
100% | 0% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | Trade this market → |
Polymarket (direct) polymarket.com |
100% | 0% | 0% | Geo-blocked in US/UK/EU | USDC, on-chain | Trade this market → |
Kalshi kalshi.com |
— | — | Up to 7% per trade | US-only, KYC required | USD | Trade this market → |
Betfair Exchange betfair.com |
— | — | 2-5% commission | Full KYC from first trade | GBP / EUR | Trade this market → |
Manifold Markets manifold.markets |
— | — | Play-money (mana) | None — play-money | Mana (no cash-out) | Trade this market → |
Outcome probabilities
Current market-implied probability for each outcome, from the live order book.
| Outcome | Probability |
|---|---|
| 35°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% |
| 36°C | 0% |
| 37°C | 0% |
| 38°C or higher | 0% |
Market context
The market hinges on the highest temperature recorded at Taipei Songshan Airport Station on 20 July 2026, a date falling in Taipei’s peak summer heat. Historical data confirms July is the hottest month in Taipei, with average daytime highs consistently around 34°C, rarely deviating more than 1–2 degrees, while the city’s record high stands at 39.3°C [2]. The current 0% YES probability implies the crowd believes the temperature will fall outside the specific range offered, likely because the range is set unrealistically low given the seasonal norm, or the market structure itself is flawed for a near-certain high-heat event.
Traders should monitor real-time weather forecasts for Taipei Songshan Airport, particularly afternoon thunderstorm probabilities which can temporarily suppress peak temperatures despite high humidity [1]. While no specific regulatory announcement directly alters this weather outcome, the market’s accessibility is shaped by broader compliance frameworks: German GlüStV restrictions may limit access for EU users, whereas US CFTC reach creates uncertainty for American participants. The ‘no-KYC up to $1,500’ threshold means retail traders can access this market without identity verification, provided they stay under the limit, enhancing liquidity but potentially attracting regulatory scrutiny if volume spikes.
Comparable cases from past prediction markets on extreme weather show that 0% probabilities often resolve incorrectly when the underlying event is statistically near-certain, as seen in previous heatwave markets where crowds underestimated record-breaking potential. The settlement window ending 2026-07-20T12:00:00Z ensures resolution occurs before the day’s final temperature readings, relying solely on Wunderground’s official daily maximum for RCSS [2].
Methodology
This overview of Highest temperature in Taipei on July 20? reviews the four comparable platforms from a regulatory perspective: which is accessible in your jurisdiction, where KYC kicks in, how the platform is classified by your country of residence. Live probability is the Polymarket mid; comparison columns show regulatory status, KYC thresholds and settlement options for each platform.
Resolution & payout
On Polymarket, resolution runs on-chain via UMA Optimistic Oracle. USDC payout is instant and automatic, with no KYC. Tax treatment depends on your jurisdiction — in the US, gains are usually ordinary income; in the UK, often capital gains. Consult a tax professional for your situation.
FAQ
- Is Polymarket legal in my country?
- Polymarket is geo-blocked in the US/UK/EU. Actual usage via the Polymarket interface is not possible there. The legal status itself varies — many countries treat prediction markets as a gray area. Polymarket Legal UK has a different geo footprint.
- Do I need to KYC for Polymarket Legal UK?
- Not for lifetime trading volume under $1,500. Above that threshold, a quick KYC flow kicks in — ID, selfie, approximately 5-10 minutes. The threshold matches FATF travel standards for unregulated crypto platforms.
- Are prediction markets gambling?
- Legally unclear in most jurisdictions. Some interpretations classify them as wagering (gambling regulation applies), others as derivatives (financial regulation applies). There's no global precedent specifically for on-chain prediction markets.
- Is there a withdrawal cap?
- No platform-side cap. You can withdraw any amount provided KYC is complete. SEPA bank withdrawals over €15,000 trigger additional anti-money-laundering checks (statutory obligation for all platforms).
- What if regulation changes?
- If regulation changes in your jurisdiction (e.g. prediction markets are banned), Polymarket Legal UK would geo-block the affected region and continue processing withdrawals. Your funds remain withdrawable at any time.
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