Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via Polymarket Legal UK) Pick polygram.ink (preferred broker) |
94% | 6% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | Trade this market → |
Polymarket (direct) polymarket.com |
94% | 6% | 0% | Geo-blocked in US/UK/EU | USDC, on-chain | Trade this market → |
Kalshi kalshi.com |
— | — | Up to 7% per trade | US-only, KYC required | USD | Trade this market → |
Betfair Exchange betfair.com |
— | — | 2-5% commission | Full KYC from first trade | GBP / EUR | Trade this market → |
Manifold Markets manifold.markets |
— | — | Play-money (mana) | None — play-money | Mana (no cash-out) | Trade this market → |
Outcome probabilities
Current market-implied probability for each outcome, from the live order book.
| Outcome | Probability |
|---|---|
| 32°C | 94% |
| 33°C | 5% |
| 25°C or below | 0% |
| 26°C | 0% |
| 27°C | 0% |
| 28°C | 0% |
| 29°C | 0% |
| 30°C | 0% |
| 31°C | 0% |
| 34°C | 0% |
| 35°C or higher | 0% |
Market context
The event is the **highest daytime temperature at Incheon Intl Airport Station on 1 August 2026**, recorded by Wunderground and settled against the day’s maximum in degrees Celsius. Seoul–Incheon in early August is normally a hot, humid period: August highs in Seoul average about 29–35°C depending on the source, while current Korean reporting for 1 August points to a nationwide heatwave with daytime highs around 31–39°C and Incheon’s morning minimum already very warm. [2][11][12]
Against that backdrop, the market’s **0% YES** crowd price is consistent with the fact that no reading has yet been established for the settlement window, rather than a strong view on the eventual peak. Comparable Korean heat events show how quickly extremes can arrive: on 1 August 2018, Seoul reached 39.6°C, and South Korea set a national record of 41.0°C that day, while Seoul itself hit 38.8°C in Yonhap’s reporting of the same heatwave. [1][9] For accessibility, the reported **no-KYC up to $1,500** means a smaller position can typically be entered without identity checks, but larger activity may trigger verification and could narrow practical access for some users. Regulatory framing matters as well: German **GlüStV** rules can affect whether a participant may legally access or use such markets from Germany, and the US **CFTC** may assert jurisdiction where a platform is deemed to involve commodity interests or derivatives activity. [1][9]
What traders should watch is the Korean Meteorological Administration’s short-range and medium-range forecasts, plus any overnight updates on heat advisories, cloud cover, sea-breeze effects, or rainfall that could cap the airport’s afternoon high. The most relevant dependency is not the citywide headline temperature but the specific station reading at Incheon airport, so even a hot Seoul forecast can mislead if coastal conditions keep the airport cooler than inland districts. [14][15][2]
Methodology
This overview of Highest temperature in Seoul (Incheon) on August 1? reviews the four comparable platforms from a regulatory perspective: which is accessible in your jurisdiction, where KYC kicks in, how the platform is classified by your country of residence. Live probability is the Polymarket mid; comparison columns show regulatory status, KYC thresholds and settlement options for each platform.
Resolution & payout
On Polymarket, resolution runs on-chain via UMA Optimistic Oracle. USDC payout is instant and automatic, with no KYC. Tax treatment depends on your jurisdiction — in the US, gains are usually ordinary income; in the UK, often capital gains. Consult a tax professional for your situation.
FAQ
- Is Polymarket legal in my country?
- Polymarket is geo-blocked in the US/UK/EU. Actual usage via the Polymarket interface is not possible there. The legal status itself varies — many countries treat prediction markets as a gray area. Polymarket Legal UK has a different geo footprint.
- Do I need to KYC for Polymarket Legal UK?
- Not for lifetime trading volume under $1,500. Above that threshold, a quick KYC flow kicks in — ID, selfie, approximately 5-10 minutes. The threshold matches FATF travel standards for unregulated crypto platforms.
- How are winnings taxed?
- Tax treatment varies by jurisdiction. In most countries, prediction market gains are treated as ordinary income or capital gains. We cannot provide tax advice — consult a tax professional for your specific situation.
- Can I trade anonymously?
- Pseudonymously, yes — up to the KYC threshold. Polymarket Legal UK stores an email address and wallet addresses rather than a legal name. Over $1,500 lifetime volume triggers KYC, after which identity is no longer anonymous.
- Is there a withdrawal cap?
- No platform-side cap. You can withdraw any amount provided KYC is complete. SEPA bank withdrawals over €15,000 trigger additional anti-money-laundering checks (statutory obligation for all platforms).
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