Highest temperature in Taipei on August 10?

Platform comparison

Market context

Polymarket has this Taipei heat contract at **0% YES** even though public forecasts still point to a very warm, humid day with a plausible high around 34°C, which is the sort of level that can decide the winning temperature band on Weather Underground’s Daily Observations table. Because settlement is tied to the highest temperature recorded at Taipei Songshan Airport Station, and not the Day High & Low summary, the exact station readings matter more than the headline forecast.

Taipei in August is usually a high-heat, high-humidity setup, with long-run climate pages and travel guides putting average daytime highs around 33°C and frequent rain or thunderstorms in the mix.[3][12][17] That makes the market unusually sensitive to whether the station briefly spikes above forecast or gets capped by cloud, showers, or marine air. For a trader holding USDC on Polygon via conditional tokens, the key point is that even a small miss in the observed maximum can shift the settlement range, especially when the crowd is pricing in a near-certain low outcome.

The main catalysts are the evolving local forecast through the morning and afternoon, plus any convective shower or thunderstorm activity that suppresses the daytime peak. Current sources show variable guidance: Weather Underground is already reporting 94°F at 7:02 AM CST, while other forecasters are centred on highs of about 92–93°F with showers or storms later in the day.[1][2][4][5] In practical terms, traders should watch the station’s hourly updates and any late-day thunderstorm development, because Taipei’s heat often peaks before rain arrives, but cloud cover can still trim the maximum enough to keep the final reading inside a lower band.[1][2][6]

Sources: 1 · 2 · 3 · 4 · 5

Methodology

We track Highest temperature in Taipei on August 10? across the five venues with material prediction-market liquidity. The probability shown is the live Polymarket mid; the comparison rows summarise how each venue treats the underlying contract — fees, KYC thresholds, settlement currency, deposit options. The highlighted row marks the cheapest route into Polymarket's order book.

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.

UK Frequently Asked Questions

Is this market available outside the US?

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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.

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Polymarket is accessible to UK traders but is not UKGC-licensed. It operates under US CFTC jurisdiction. UK residents face no domestic legal prohibition on using it, but UKGC consumer protections do not apply. For UKGC-regulated alternatives, Betfair Exchange and Smarkets offer similar prediction-style markets.

Do I pay tax on prediction market profits in the UK?

UKGC-licensed platform profits (Betfair, Smarkets) are typically tax-free gambling winnings for UK individuals. Polymarket profits involve USDC crypto transactions, which HMRC treats as Capital Gains Tax events. Keep full transaction records and report via Self Assessment if gains exceed £3,000 per tax year.

How do I deposit on Polymarket from the UK?

UK traders typically fund Polymarket via Coinbase UK, Kraken or Revolut — buying USDC with GBP and transferring to a Polygon-compatible wallet (MetaMask, Coinbase Wallet). Polymarket's onboarding walks you through the bridging process. Typical GBP-to-USDC conversion costs 0.5–1%.