Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via Who Will Win) Pick polygram.ink (preferred broker) |
100% | 0% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | Live odds → |
Polymarket (direct) polymarket.com |
100% | 0% | 0% | Geo-blocked in US/UK/EU | USDC, on-chain | Live odds → |
Kalshi kalshi.com |
— | — | Up to 7% per trade | US-only, KYC required | USD | Live odds → |
Betfair Exchange betfair.com |
— | — | 2-5% commission | Full KYC from first trade | GBP / EUR | Live odds → |
Manifold Markets manifold.markets |
— | — | Play-money (mana) | None — play-money | Mana (no cash-out) | Live odds → |
Outcome probabilities
Current market-implied probability for each outcome, from the live order book.
| Outcome | Probability |
|---|---|
| 33°C | 100% |
| 34°C | 1% |
| 25°C or below | 0% |
| 26°C | 0% |
| 27°C | 0% |
| 28°C | 0% |
| 29°C | 0% |
| 30°C | 0% |
| 31°C | 0% |
| 32°C | 0% |
| 35°C or higher | 0% |
Market context
At Incheon International Airport, the market’s current **0% YES** price makes the listed outcome the obvious **underdog** against a summer heat setup that still points to a mid-30s cap rather than anything extreme. The crowd is concentrated in the low-30s band, with **32°C** the frontrunner at 42% and **33°C** next at 30%, while the market description says resolution follows the highest temperature recorded on the day at the Incheon Intl Airport Station.[1]
That framing matters because the nearest comparable official forecasts are already clustering around **33°C for Incheon** and **33–39°C** across the broader Seoul metro on 2 August, which leaves the consensus anchored but not especially aggressive.[13][2] Yonhap reported the state weather agency expected South Korea to peak near **39°C** on Sunday, with Seoul-area daytime highs of **33–39°C** and humidity making it feel hotter, while Asiae’s city breakdown put **Incheon at 33°C** and **Seoul at 35°C**.[2][4] For a handicapper, that is a market with the favourite sitting in the low 30s, but with little room for a surprise cool outcome unless cloud, rain or sea-breeze effects trim the airport reading more than forecast.
The key catalysts are the Korea Meteorological Administration short-range updates and the intraday evolution of cloud, rainfall and onshore flow, because this market resolves to the day’s *highest* observed temperature rather than a model peak.[5][6] Traders should watch whether the airport sits under early cloud or showers, or whether a late-morning clearance allows a higher reading; conversely, any rain band or thicker maritime influence would strengthen the contrarian case for a lower band. Reuters also noted South Korea had just recorded a national extreme of **41.4°C** in Yangsan, underlining how powerful the current heat pattern is even if Incheon itself typically runs cooler than inland Seoul.[11]
Methodology
This page reviews Highest temperature in Seoul (Incheon) on August 2? across five venues. The live probability is the Polymarket mid-price, sourced directly from the on-chain Polygon order book; the comparison columns benchmark each venue on fee structure, KYC, settlement currency and payment rails. Every CTA routes to Who Will Win, which mirrors the Polymarket order book at 0% fees.
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 Who Will Win. 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 Who Will Win 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.
Trade Highest temperature in Seoul (Incheon) on August 2? on Who Will Win
Live order book, 0% fees, USDC settlement in seconds.
Open live market →