Highest temperature in Taipei on July 20?

Platform comparison

Market context

Taipei Songshan Airport will record its peak daily temperature on 20 July 2026, a date falling within the city’s hottest month where daytime averages reach 34°C. The current crowd-implied probability of 0% for any specific outcome suggests the market is either mispriced or awaiting a specific threshold trigger, as historical data confirms July routinely produces highs exceeding 35°C in this region[2]. Programmatic traders should treat this zero probability as an anomaly rather than a signal of cold weather, given that the settlement window closes at midday UTC, capturing the full afternoon heat spike typical of the station’s location.

Historical patterns for late July in Taipei show consistent thermal peaks, with 2026 following the seasonal norm of extreme heat rather than the cool outliers that might justify a 0% probability. Comparable cases from previous years indicate that temperatures frequently breach 36°C during this period, making the current pricing a clear deviation from the established climatic baseline[2]. A bot evaluating this market would likely flag the discrepancy between the zero probability and the 34°C average high, treating the odds as a potential arbitrage opportunity against the seasonal reality.

Traders monitoring this event must watch real-time feeds from Wunderground for the RCSS station, as the resolution source relies exclusively on the highest recorded temperature for that day[1]. While no specific weather announcements are scheduled for 20 July, the dependency on the 12:00 UTC settlement cutoff means any late-morning cloud cover or sudden rain could alter the final figure. The current cloudy conditions at Songshan Airport, with a RealFeel of 92°F, illustrate the volatility of humidity and cloud cover that bots must factor into their conditional order logic[1].

Sources: 1 · 2

Methodology

We track Highest temperature in Taipei on July 20? 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

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 Polymarket Bot UK. Kalshi charges up to 7% per trade; Betfair Exchange takes 2-5% commission on net winnings.

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.

Do I need to KYC for this market?

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

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.