Highest temperature in Taipei on July 22?

Platform comparison

Market context

Taipei is running very hot at Songshan Airport this morning, with the airport already near 31°C and a reported RealFeel around 39°C before the peak heating window. That leaves plenty of time for the day’s maximum to be set later, which matters because this market resolves on the highest recorded temperature at the station on 22 July, not the midday reading.

The 0% crowd price looks like an extreme discount on a hot-season outcome rather than a view that a high temperature is impossible. Taipei’s July climate is typically oppressive, and recent live weather reporting has already shown temperatures in the low 30s Celsius with high humidity, which is consistent with a daily maximum landing somewhere in the mid-to-high 30s if sunshine briefly dominates. Polymarket’s outcome distribution also shows the market leaning heavily to 36°C, with 37°C or higher still priced as a minority tail, suggesting traders expect a hot but not exceptional peak.[1][2][3]

The main catalysts are the afternoon forecast evolution, any isolated thunderstorm development, and whether cloud cover or sea-breeze effects cap the heat before the official settlement window closes. Forecast services currently point to mixed sun and cloud with a non-trivial chance of thunderstorms and strong humidity, so the key swing factor is whether convection arrives early enough to suppress the high or late enough to leave the maximum intact.[5] The definitive check will be the Wunderground history page for Taipei Songshan Airport once the day’s observations are complete.

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 Prediction Today. 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.

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 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.

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.