Highest temperature in Seoul on July 31?

Platform comparison

Market context

The event is the day’s **highest temperature** at Incheon Intl Airport Station, which is the settlement reference rather than the city’s headline maximum. In late July, the Seoul–Incheon area often sits in the firing line for humid subtropical heat, and recent summers have shown that the upper end can still move sharply when a heat dome settles over the peninsula; Seoul’s modern record remains 39.6°C, while 2025 brought one of the hottest Julys on record across South Korea[14][18][17].

A 0% YES price is easiest to read as a market saying the published range is highly unlikely to be the true outcome, but weather markets often hinge on a single observation site and a single daily maximum rather than the broader urban narrative. That matters here because airport stations can differ from central-city readings, and comparable cases in Korea show that records can land unexpectedly late in the day, or be missed by a narrow margin even during extreme heat. Seoul has recently posted long runs of tropical nights and very high daytime readings, underlining how quickly the distribution can shift when synoptic conditions align[1][2][13].

For traders, the key catalysts are the KMA setup, the timing of peak daytime heating, and any late-day cloud, sea-breeze or rain-band intrusion that caps the maximum before the settlement window closes. A major watchpoint is whether the regional heat wave persists into the afternoon, as South Korea has already seen exceptional 2026 heat in the south, including a national record at Yangsan on 31 July, which reinforces that the broader pattern is still capable of producing outlier readings[11].

Sources: 1 · 2 · 3 · 4 · 5

Methodology

Entertainment-specific comparison page for Highest temperature in Seoul on July 31?. Polymarket's live quote (Polygon order book) shows the award probability. For awards markets, Polymarket usually has the deepest liquidity; Betfair runs comparable markets for Oscars/Emmys; Manifold for Eurovision.

Resolution & payout

Entertainment markets settle on official award ceremony or show end. Polymarket uses UMA Optimistic Oracle with a source URL to the official award website. Two-hour dispute window, then smart-contract payout in USDC.

FAQ

Which entertainment markets are available?

Oscars / Academy Awards (Best Picture, Best Director, Best Actor/Actress), Eurovision Song Contest, Emmy Awards, Grammy Awards, Golden Globes, plus reality-TV outcomes (Bachelor, Survivor). Volume usually sits in the five- to six-figure range per market.

How accurate are award predictions?

Variable. Industry-predictable awards (Oscar Best Picture) have high market accuracy (Brier ~0.15). Reality-TV outcomes with small markets carry more noise. Eurovision is notorious for market upsets due to bloc voting.

Who can trade Eurovision markets?

Polymarket is globally accessible but geo-blocked in select jurisdictions — traders there use broker frontends with a different geo footprint to reach the order book. Eurovision markets have strong European liquidity; German/Austrian/Swiss flow often drives consensus.

How are reality-TV outcomes verified?

UMA Oracle uses the official show website or producer statement as the resolution source. Very narrowly defined markets (e.g. "Will X be voted off the island?") rely on the official show notes.

Are there politics-entertainment crossover markets?

Yes — e.g. "Will X be parodied on SNL?", "Who will host the next Oscars?". These have thinner liquidity but offer alpha for traders who read pop-culture and political worlds together.