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Highest temperature in Seoul on June 28?

"Highest temperature in Seoul on June 28?" on Polymarket, Kalshi and Polymarket KYC UK — what traders need to know about platform choice, KYC and tax law.

27°C 100% 21°C or below 0% 22°C 0% 23°C 0% Volume: $181K Closes: 28 Jun 2026
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Highest temperature in Seoul on June 28?

Platform comparison

PlatformYES oddsNO oddsFeeKYCSettlement
Polymarket (via Polymarket KYC UK) Pick
polygram.ink (preferred broker)
100% 0% 0% (USDC on-chain) No-KYC up to $1,500 USDC, auto via UMA oracle Open live market →
Polymarket (direct)
polymarket.com
100% 0% 0% Geo-blocked in US/UK/EU USDC, on-chain Open live market →
Kalshi
kalshi.com
Up to 7% per trade US-only, KYC required USD Open live market →
Betfair Exchange
betfair.com
2-5% commission Full KYC from first trade GBP / EUR Open live market →
Manifold Markets
manifold.markets
Play-money (mana) None — play-money Mana (no cash-out) Open live market →

Outcome probabilities

Current market-implied probability for each outcome, from the live order book.

OutcomeProbability
27°C100%
21°C or below0%
22°C0%
23°C0%
24°C0%
25°C0%
26°C0%
28°C0%
29°C0%
30°C0%
31°C or higher0%

Market context

The Highest temperature in Seoul on June 28? prediction market currently prices this outcome at 100% YES. This market will resolve to the temperature range that contains the highest temperature recorded at the Incheon Intl Airport Station in degrees Celsius on 28 Jun '26. The resolution source for this m…

Methodology

This overview of Highest temperature in Seoul on June 28? 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 KYC UK has a different geo footprint.
What happens during a tax audit?
You're responsible for documenting your trades. Polymarket KYC UK 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.
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).
What if regulation changes?
If regulation changes in your jurisdiction (e.g. prediction markets are banned), Polymarket KYC UK would geo-block the affected region and continue processing withdrawals. Your funds remain withdrawable at any time.
and

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