Highest temperature in Seoul on July 31?

Platform comparison

Market context

Seoul’s late-July heat profile is still the main reference point here: climatology puts the month’s average high at about 85°F, and the forecast for 31 July sits around the low-to-mid 30s Celsius rather than anything extreme by regional standards.[1][20] That matters because the market resolves on the **highest** reading at Incheon International Airport Station during the day, not the city forecast headline, so brief afternoon spikes and airport-specific sea-breeze effects can both change the final bucket.

The current 0% YES implies the crowd is not pricing in a reading that lands in the market’s YES range, but that does not mean a hot day is impossible; late-July heatwaves in South Korea have previously pushed Seoul into the mid-30s Celsius, with the Korea Meteorological Administration warning that highs can rise further under persistent clear conditions.[2][7] For context, this is a weather market rather than a policy event, so the relevant “comparable cases” are forecast-to-observation gaps: markets like this often hinge on whether the actual station maximum matches the forecast peak, whether clouds or showers cut the top end, and whether the airport station tracks the urban centre or runs a degree or two cooler.

For accessibility, the regulatory frame matters as much as the weather. In Germany, GlüStV treatment can affect whether a platform is treated as a gambling-style product and what marketing or participation rules apply, while US CFTC reach remains relevant if the contract is deemed a derivatives-like event market accessible to US persons. “No-KYC up to $1,500” means a user can usually open and trade at low size without full identity verification, which increases accessibility for small positions in a simple weather event like this, but it typically does not remove withdrawal checks, sanctions screening, or jurisdictional restrictions.

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. Is Kalshi Legal in California has a different geo footprint.

Do I need to KYC for Is Kalshi Legal in California?

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.

Can I trade anonymously?

Pseudonymously, yes — up to the KYC threshold. Is Kalshi Legal in California 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.

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.

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).