Highest temperature in Taipei on July 20?

Platform comparison

Market context

Taipei’s July 20, 2026, heatwave is already priced into the Polymarket contract for the highest temperature at Taipei Songshan Airport, with the crowd assigning a 100% probability to the 35°C outcome and 0% to anything below 28°C[1]. This stark divergence from the 0% YES implied probability for lower ranges reflects on-chain conditional token demand for USDC on Polygon, where traders are locking in the consensus that July in Taipei reliably hits extreme highs.

Historically, July is Taipei’s hottest month, with daytime averages reaching 34°C and typical ranges spanning 32–38°C under intense humidity that amplifies perceived heat[2][3]. The 35°C frontrunner aligns with this pattern, as the city’s sticky summer climate consistently pushes temperatures into the mid-30s, making lower ranges statistically improbable and justifying the market’s near-certainty pricing.

Traders should monitor daily Wunderground updates for the RCSS station, the official resolution source, and watch for any typhoon forecasts or heat advisories from Taiwan’s Central Weather Administration that could disrupt the expected high[1]. While no immediate announcements are pending, the settlement window closing at 2026-07-20T12:00:00Z means real-time temperature logs will determine the outcome, with humidity and sunshine duration acting as key catalysts for deviations from the 35°C consensus.

Sources: 1 · 2 · 3

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

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.

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 Polymarket Scam? 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.