Highest temperature in Seoul on June 22?

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Market context

The temperature in question is the day’s *highest reading at Incheon International Airport Station*, not a citywide Seoul average, so a single afternoon spike can decide the range even if conditions elsewhere in the capital are cooler. June in Seoul is already a warm, rising-temperature month, with average daily highs climbing from about 25°C to 27°C over the month and rarely exceeding the high-30s Fahrenheit equivalent above that band[1]. South Korea has also been running hotter in recent summers, with reporting citing 2024 as the country’s hottest summer on record and the peninsula warming faster than the global average over the past century[2].

The 0% implied probability is best read as a pricing artefact rather than a claim that the event is impossible. For a weather market settled on a narrow daily temperature range, the only live variable is whether the airport’s recorded maximum lands in the bracket that traders expect; comparable June observations in Seoul have already reached 91°F in 2026 data, which would sit comfortably in the upper ranges such markets often list[4]. Because the source is Wunderground’s station history, the decisive dependency is the final posted daily maximum for RKSI, not any forecast wording or general metropolitan weather discussion[6].

From a market-access perspective, German GlüStV rules can restrict local participation in offerings treated as gambling-style products, while the US CFTC’s reach is relevant where a contract is viewed as a derivatives-style event market rather than a pure betting product. In practical terms, “no-KYC up to $1,500” means small accounts may be able to enter this specific market with lighter identity checks, but only until platform thresholds or jurisdictional screening require verification; that affects accessibility more than settlement mechanics. The main catalysts to watch are the day’s high-temperature progression, any marine-layer or rain timing around Incheon, and the final Wunderground station update after the local afternoon peak.

Sources: 1 · 2 · 3 · 4 · 5

Methodology

This page reviews Highest temperature in Seoul on June 22? across five venues. We show live odds for Polymarket-based markets (sourced from the Polygon order book); for other venues we list platform attributes, since the comparable contracts are not exposed via a public API on every venue. Every CTA points at Polymarket KYC UK — the application we operate, where you trade directly against the Polymarket order book at 0% fees.

Resolution & payout

Polymarket-based markets settle through the UMA Optimistic Oracle on Polygon. A proposer submits the outcome, a two-hour challenge window opens, and unchallenged proposals finalise the resolution. Payouts settle automatically in USDC the moment the result is final — no bookmaker, no delay.

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FAQ

Where can I trade this market with the lowest fees?

On Polymarket KYC UK, which mirrors the Polymarket order book at 0% fees. Kalshi charges up to 7% per trade; Betfair Exchange takes 2-5% commission on net winnings.

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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.