Highest temperature in Taipei on July 12?

Platform comparison

Market context

Taipei Songshan Airport is currently experiencing overcast conditions with a temperature of 27°C and a heat index of 31°C, while July remains the hottest month of the year for the region with an average high of 36°C[1][4]. The prediction market for the highest temperature on 12 July 2026 shows a crowd-implied probability of 0% for the YES outcome, suggesting traders believe the specific temperature range in question is virtually impossible to hit today[9]. This zero probability diverges sharply from historical climate data, where July highs frequently reach or exceed 36°C, indicating the market may be pricing in a specific, narrow range that contradicts typical seasonal peaks rather than the general likelihood of high heat[1].

Traders should monitor real-time METAR updates from the Central Weather Administration, which currently reports an apparent temperature of 35°C and 88% relative humidity at the station[6]. The settlement relies exclusively on Wunderground’s daily history for RCSS, meaning any discrepancy between live METAR readings and the final archived record could create arbitrage opportunities if the platform updates its data post-settlement[9]. With heavy rain forecast for the afternoon and evening of 12 July, including 95mm of precipitation, the immediate weather catalyst is the potential for cloud cover and rainfall to suppress peak temperatures below the historical average[8]. This specific weather pattern explains the 0% probability, as traders anticipate the rain will prevent the temperature from reaching the threshold required for the YES outcome.

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

At resolution the UMA oracle takes over: a proposer posts the outcome with a bond, any token holder can dispute within two hours. Without dispute the result is accepted and the smart contract distributes USDC instantly.

On Kalshi (CFTC-regulated) resolution runs through their in-house clearing engine in USD. Betfair Exchange settles after match end in the account's local currency. Manifold pays no cash — only its in-platform "mana" currency.

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 Best Prediction Markets 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 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 Best Prediction Markets 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.