Highest temperature in Taipei on July 22?

Platform comparison

Market context

Polymarket is pricing the Taipei Songshan Airport temperature contract with **35°C** leading at **38%**, while **36°C** sits close behind at **32%**. Because settlement is tied to the **highest** temperature recorded at the airport station, the live book is really about whether the day’s peak clears the mid-30s band rather than where the morning reading starts; the contract is collateralised in **USDC**, traded on **Polygon**, and settles via conditional tokens against the Wunderground history page for RCSS.

That 0% headline probability for **YES** is hard to square with Taipei’s July climate, which is normally at its most severe. Taipei’s July daytime average high is about **34°C**, and the current observed conditions at Taipei Songshan Airport are already very hot, with a RealFeel of **103°F** under heavy humidity and limited cloud cover. On a market like this, traders usually read the pricing through the lens of heat accumulation: a mild overnight start still leaves plenty of room for a late-afternoon spike into 35–36°C, which is exactly where the current order book is concentrated.

The main catalysts are straightforward weather dependencies rather than scheduled events: cloud cover, rainfall timing, onshore flow, and any tropical-system effects that could cap the day’s maximum. The Wunderground reading is the settlement source, so a trader has to watch the airport station itself, not just general Taipei forecasts, and the relevant cut-off is the highest recorded temperature before the settlement window closes. If nearby heat advisories or typhoon-related changes appear in Taiwan forecast updates, they matter only insofar as they alter the airport’s actual peak temperature.

Sources: 1 · 2 · 3

Methodology

We track Highest temperature in Taipei on July 22? 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

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 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.

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.