Highest temperature in Seoul on July 27?

Platform comparison

Market context

The day’s weather in the Seoul area points to a **temperatures-in-the-30s** contest rather than a deep freeze or an extreme heat spike, with the current crowd price of **0% YES** implying the market is treating the top-end bands as almost unreachable. The quoted settlement source is Incheon Intl Airport Station, not central Seoul, so traders should keep a close eye on coastal and airport-area moderation from cloud cover and rain; a relatively small shift in the day’s peak could still move the outcome into a higher band if the sun breaks through briefly. [1]

Historically, July in Seoul is usually warm and wet, with typical highs around **30°C** and frequent rainfall, which makes the market’s consensus lean towards a moderate summer reading rather than a record-style outlier. That framing is important for handicapper-style pricing: the favourite is a mid-30s peak, while the underdog is anything materially above that if showers suppress the afternoon maximum. With implied probability stuck at zero, the main value discussion is not whether it will be hot, but whether the day can clear the upper range long enough for the airport station to print a higher maximum than the crowd expects. [2]

For traders, the key catalyst is the short-range forecast trend for the capital region: Chosun reported showers expected in Seoul and nearby areas from the morning, with forecast highs for Seoul of **26–33°C** and rainfall of **5–40 mm**. That setup favours the underdog on any “higher than expected” band if the rain arrives late or patchily, but it also caps the favourite if cloud cover arrives early and persists. In other words, consensus sits with a restrained afternoon peak, while the value angle is any evidence of a drier, sunnier window around the station rather than the city centre. [1]

Sources: 1 · 2

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

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'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.

Do I need to KYC for this market?

On Polymarket directly, no — it's wallet-based. Intermediary brokers like Who Will Win 2026 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.