Highest temperature in Taipei on August 2?

Platform comparison

Market context

Taipei’s temperature market is trading at **0% YES**, which leaves Polymarket pricing the contract as effectively out of the money even though August in the city is usually very hot. In practical on-chain terms, traders are buying and selling conditional tokens against USDC on Polygon, and the contract will resolve against the highest temperature recorded at Taipei Songshan Airport on the day, as reported by Wunderground.

For context, Taipei’s August weather normals cluster around the low 30s Celsius, with several sources putting typical daily highs near 32–34°C and noting that August is among the hottest months of the year. Historical comparisons matter because this market is not about the average, but the day’s peak reading: the distribution is usually tight, yet extreme heat can push the top end into the mid- or high-30s. AccuWeather and travel guides both show recent August forecasts and historical ranges centred well above 30°C, while longer-run climate references place Taipei’s summer highs in the low 30s and record extremes near 38–40°C.

For a trader, the key catalysts are the local weather pattern through the afternoon, any tropical disturbance over Taiwan, and the possibility of convective showers that cap the maximum temperature even when the morning starts hot. The settlement source is a fixed airport station, so the relevant move is the observation there, not the citywide average. If a typhoon track, heavy rain band, or strong cloud cover develops over northern Taiwan, the implied probability for higher temperature bands can reprice quickly; if the day trends clear and humid, the upper bands become more plausible.

Sources: 1 · 2 · 3 · 4 · 5

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.

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.

Do I need to KYC for this market?

On Polymarket directly, no — it's wallet-based. Intermediary brokers like PolyGram trigger KYC only above $1,500 of lifetime trading volume; under that you trade pseudonymously with a single wallet address.