Highest temperature in Seoul (Incheon) on August 6?

Platform comparison

Market context

Polymarket is pricing this Incheon airport temperature contract at **0% YES** today, which means the market is effectively saying the listed outcome buckets are being treated as dead money unless the day’s observed high lands in a priced range. Because settlement uses the **highest temperature recorded at Incheon Intl Airport Station on 6 August 2026** from Wunderground, traders should focus on the airport-specific observation rather than Seoul city headlines alone; on Polymarket, the position is held in **USDC** and represented by **conditional tokens** on **Polygon**, so the real question is whether the final maximum clears the relevant Celsius band before the cutoff.

The historical comparison is straightforward: early-August heat in Seoul and nearby Incheon is often strong enough to support the upper 20s to low 30s Celsius, and recent forecasts have pointed even higher. AccuWeather’s August outlook for Seoul shows daily highs around **88°F** on 6 August, while WeatherSpark puts Seoul’s average high for early August near **85°F**, with the seasonal peak around 6 August. On the day, Korean media reported a heatwave emergency warning across the Seoul metropolitan area and forecast highs of **39°C in Seoul** and **38°C in Incheon**, with SBS also noting that Seoul could challenge its summer high for the year. That combination matters because airport stations often run a little cooler than inner-city readings, but not enough to ignore a broad heat spike. [1][2][3][15]

The main catalysts are the Korea Meteorological Administration short-range updates, the day’s actual wind and cloud pattern over west-coast Incheon, and any afternoon rain that trims the maximum before it can be logged. As of the morning reports, forecasters still expected severe heat and only temporary cooling from showers, with humidity high enough to keep apparent temperatures elevated. For traders, the practical watchpoints are whether the airport station gets a late-morning or early-afternoon surge, whether sea-breeze moderation sets in, and whether showers arrive early enough to cap the recorded high before the settlement window closes. [2][3][9][13]

Sources: 1 · 2 · 3 · 4 · 5

Methodology

This page reviews Highest temperature in Seoul (Incheon) on August 6? across five venues. The live probability is the Polymarket mid-price, sourced directly from the on-chain Polygon order book; the comparison columns benchmark each venue on fee structure, KYC, settlement currency and payment rails. Every CTA routes to PolyGram, which mirrors 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.

Kalshi-based markets settle in USD via the CFTC-regulated clearinghouse. Betfair Exchange settles in GBP/EUR net of commission. Manifold is play-money and does not pay out real funds.

FAQ

Where can I trade this market with the lowest fees?

Polymarket is geo-blocked in the US/UK/EU. The easiest 0%-fee broker into the same order book is PolyGram. Kalshi charges up to 7% per trade; Betfair Exchange takes 2-5% commission on net winnings.

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's the difference between YES and NO shares?

A YES share pays $1.00 if the event happens, $0 otherwise. A NO share pays $1.00 if the event doesn't happen. The market price between 0¢ and 100¢ is the implied probability.

What does Polymarket cost to trade?

Polymarket itself charges 0% — the only cost is the Polygon network fee, typically under $0.01 per transaction. Off-chain venues like Kalshi or Betfair charge 2-7% commission.

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.