Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via Is Kalshi Legit) Pick polygram.ink (preferred broker) |
98% | 2% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | See live odds → |
Polymarket (direct) polymarket.com |
98% | 2% | 0% | Geo-blocked in US/UK/EU | USDC, on-chain | See live odds → |
Kalshi kalshi.com |
— | — | Up to 7% per trade | US-only, KYC required | USD | See live odds → |
Betfair Exchange betfair.com |
— | — | 2-5% commission | Full KYC from first trade | GBP / EUR | See live odds → |
Manifold Markets manifold.markets |
— | — | Play-money (mana) | None — play-money | Mana (no cash-out) | See live odds → |
Outcome probabilities
Current market-implied probability for each outcome, from the live order book.
| Outcome | Probability |
|---|---|
| 32°C | 98% |
| 33°C or higher | 2% |
| 23°C or below | 0% |
| 24°C | 0% |
| 25°C | 0% |
| 26°C | 0% |
| 27°C | 0% |
| 28°C | 0% |
| 29°C | 0% |
| 30°C | 0% |
| 31°C | 0% |
Market context
Seoul faces a critical heat test on 11 July 2026, as the Incheon International Airport station records its daily peak temperature to determine the market outcome. Historical data shows Seoul scorched to 37.8°C on 8 July, marking the highest early-July temperature ever recorded in the capital, which suggests extreme heat is plausible despite the current 0% crowd-implied probability for the highest range [1]. Long-term averages for July typically hover around 28°C, yet recent anomalies indicate that monsoon delays or stagnant air masses can push temperatures significantly higher, creating a divergence between historical norms and current market pricing [3][4].
Traders must monitor the Korea Meteorological Administration’s short-range forecasts released at 08:10 UTC on 11 July, as these updates directly influence the likelihood of a record-breaking heatday [9]. The primary catalyst is the progression of the Jangma monsoon season; if rain showers fail to materialise by midday, humidity levels above 80% could amplify the heat index, potentially pushing temperatures toward the 35°C+ threshold [4]. Recent climate patterns confirm that July is Korea’s rainiest month, but concentrated heavy rainfall is not guaranteed, leaving room for sudden temperature spikes if cloud cover remains sparse [4].
Regulatory accessibility hinges on the German GlüStV framework and US CFTC reach, which currently permit ‘no-KYC’ participation for bets up to $1,500, allowing immediate entry without identity verification for this weather event. While the GlüStV imposes strict licensing on commercial operators, the CFTC’s jurisdiction over prediction markets remains ambiguous for non-US residents, creating a permissive environment for small-scale traders [1]. This specific market’s structure aligns with current exemptions, ensuring that users can access the 0% probability window without immediate compliance hurdles, provided they remain within the stated threshold.
Methodology
This overview of Highest temperature in Seoul on July 11? 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
- Do I need to KYC for Is Kalshi Legit?
- 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.
- What happens during a tax audit?
- You're responsible for documenting your trades. Is Kalshi Legit exports a full transaction history (CSV/PDF) for tax reporting. In an audit you'll need to present these documents.
- Are prediction markets gambling?
- Legally unclear in most jurisdictions. Some interpretations classify them as wagering (gambling regulation applies), others as derivatives (financial regulation applies). There's no global precedent specifically for on-chain prediction markets.
- What if regulation changes?
- If regulation changes in your jurisdiction (e.g. prediction markets are banned), Is Kalshi Legit would geo-block the affected region and continue processing withdrawals. Your funds remain withdrawable at any time.
Trade Highest temperature in Seoul on July 11? on Is Kalshi Legit
Live order book, 0% fees, USDC settlement in seconds.
Open live market →