Highest temperature in Taipei on July 13?

Platform comparison

Market context

Taipei Songshan Airport faces a scorching mid-July day as traders assess the likelihood of record-breaking heat on 13 July 2026. The crowd-implied probability for the highest temperature reaching the upper threshold sits at 0% YES, suggesting the market views extreme heat as highly improbable despite July being the hottest month locally, with average highs of 33°C and historical peaks reaching 39.7°C [1][5].

Historical data frames this 0% probability as potentially mispriced, given Taipei’s July daytime temperatures typically range between 32°C and 38°C, with intense humidity amplifying heat stress [3]. The city recorded its second-highest temperature since 1897 recently, hitting 39°C in July, while the all-time peak of 39.7°C occurred in 2020, marking the highest in 124 years [2][5]. These comparable cases suggest the consensus may be underestimating the volatility of mid-summer heatwaves in the region.

Traders should monitor real-time apparent temperature charts from the Central Weather Administration and hourly forecasts for precipitation or thunderstorms, which could suppress peak temperatures [8][9]. Recent heavy thunderstorms in northern Taiwan have already forced flight suspensions at Songshan, indicating weather instability that could act as a cooling catalyst [9]. With no typhoon formation indicated before late July, the primary risk remains clear-sky radiative heating, making the 0% line a potential contrarian value spot if cloud cover fails to materialise by midday.

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

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 Who Will Win 2026. 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 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.

Do I need to KYC for this market?

On Polymarket directly, no — it's wallet-based. Intermediary brokers like Who Will Win 2026 trigger KYC only above $1,500 of lifetime trading volume; under that you trade pseudonymously with a single wallet address.