Highest temperature in Seoul on June 22?

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Market context

Polymarket is pricing this Seoul heat contract at **0% YES** in USDC on Polygon, which means the market currently assigns no meaningful chance that the day’s high at Incheon Intl Airport Station lands in the settlement band. The contract settles on the temperature range containing the highest reading recorded on Wunderground for 22 June 2026, so the relevant question is the *single-day maximum*, not the average or the overnight low.

June in Seoul is typically warm but not usually extreme: WeatherSpark shows average daily highs rising from about 77°F to 81°F through the month, with highs rarely above 87°F. That framing matters because a 0% implied price suggests traders see the settlement threshold as comfortably out of reach unless a sharp late-June heat spike develops, and comparable Korea heat episodes have tended to show up during stronger summer ridges rather than normal early-summer conditions. Wunderground’s historical coverage also shows South Korea has seen major heat records in recent years, underlining that low-probability summer temperature bets can still move quickly if conditions turn unusual.

For a trader, the main catalysts are straightforward: the forecast track for the Korean Peninsula, any sudden shift in the East Asian summer monsoon pattern, and whether clear skies or dry downslope winds push afternoon maxima higher than model guidance. Because the market resolves off the Incheon airport station rather than Seoul city centre, local coastal influence and airport-specific readings matter. The settlement window closes at 12:00 UTC, so intraday updates from official forecasts and the Wunderground station page are the practical references for whether the high is trending into a higher bracket.

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Methodology

This page is a comparison snapshot: one live quote (Polymarket), four reference venues with their key attributes, and a single execution path — every trade button routes to Polymarket Legit?, which mirrors the Polymarket order book directly.

Resolution & payout

At resolution the UMA oracle takes over: a proposer posts the outcome with a bond, any token holder can dispute within two hours. Without dispute the result is accepted and the smart contract distributes USDC instantly.

On Kalshi (CFTC-regulated) resolution runs through their in-house clearing engine in USD. Betfair Exchange settles after match end in the account's local currency. Manifold pays no cash — only its in-platform "mana" currency.

FAQ

How does resolution work?

Through the UMA Optimistic Oracle on Polygon: a proposer submits the outcome, a two-hour challenge window opens, and USDC payouts settle automatically once the result is final.

What does it cost to trade on Polymarket Legit??

Zero. Polymarket Legit? routes every order to the live Polymarket order book; the only cost is the Polygon network fee, typically under $0.01 per transaction.

How fast are USDC deposits?

Polygon credits deposits after 12 confirmations — usually under 30 seconds. Withdrawals follow the same path and land back in your wallet within minutes.

Do I need to KYC for this market?

Not under $1,500 of lifetime trading volume. Above that threshold, Polymarket Legit? triggers a quick verification flow that finishes in minutes.

How reliable are the quoted odds?

The YES/NO percentages are the live mid-prices of the Polymarket order book. On deep markets they move every few seconds; on thinner ones you'll see short plateaus.