Highest temperature in Seoul on July 31?

Platform comparison

Market context

The measured outcome will be the day’s **highest temperature at Incheon International Airport Station** on 31 July, not the afternoon “feels like” value or a Seoul city average, so the market is really a one-day airport observation question. That distinction matters because airport stations can differ from central Seoul, and the settlement source is Wunderground’s daily history page for RKSI. [2][14]

The current 0% YES print is easiest to read as a market price, not a weather forecast, because late-July Seoul typically sits in a hot, humid regime with average July highs around 27–30°C and occasional spikes well above that in heatwave periods. Forecasts for late July 2026 have already pointed to high temperatures in the low-to-mid 30s Celsius in Seoul, while southern parts of Korea have been described as reaching the upper 30s, which frames this as a plausible high-temperature event even before station-level readings are known. [1][2][16][18]

For accessibility, the regulatory angle is material: in Germany, the GlüStV framework can affect whether online prediction-market participation is lawful or restricted, while in the United States the CFTC’s reach is relevant because weather derivatives and event contracts can raise commodity-law questions depending on structure and venue. A “no-KYC up to $1,500” policy means a user may be able to enter and trade within that cap without full identity verification, but it does not remove geo-blocking, local compliance checks, or any platform limits on who can access this specific market. [*No source provided in search results for legal claims; based on general regulatory context*]

Sources: 1 · 2 · 3 · 4 · 5

Methodology

This overview of Highest temperature in Seoul on July 31? 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.

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.

What happens during a tax audit?

You're responsible for documenting your trades. Polymarket Legal UK exports a full transaction history (CSV/PDF) for tax reporting. In an audit you'll need to present these documents.

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).