Highest temperature in Taipei on July 24?

Platform comparison

Market context

Polymarket is pricing this Taipei heat contract with **0% implied probability** for a Yes outcome, even though the live book still has a leading band around **35°C** and **32°C**. On Polymarket, traders are buying and selling conditional tokens settled in USDC on Polygon, so the displayed price is the market’s current estimate of where the Taipei Songshan Airport Station maximum will land within the listed temperature ranges at settlement. [1]

The backdrop is a city that is usually very warm and humid in July, with typical highs around **33°C** and a climate profile that leaves room for daily swings rather than a fixed peak. Taipei’s July weather is described as changeable, with frequent rain and strong sunshine, which matters because cloud cover, afternoon convection, and rainfall can all suppress or lift the day’s maximum temperature. Comparable July averages show why the market can still cluster near the low-to-mid 30s even when a zero-per cent quote appears on the board. [2][3][4]

For traders, the main catalysts are the same factors forecasters watch locally: morning cloud cover, rainfall timing, and whether the day turns into a hot, humid build-up ahead of thunderstorms. The market resolves from Wunderground’s recorded high at Taipei Songshan Airport Station, so the practical risk is not the city-wide feel but the specific station reading by the close of the settlement window. The contract launched on 22 July and remains open until resolution data posts, so any rapid change in the weather pattern can move the price before the official high is locked in. [1]

Sources: 1 · 2 · 3 · 4

Methodology

We track Highest temperature in Taipei on July 24? 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.

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 PolyGram. 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'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.

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.