Highest temperature in Seoul (Incheon) on August 6?

Platform comparison

Market context

Seoul is in the grip of an exceptional heatwave, and forecasters are already calling for a daytime high of **39°C** in the capital on 6 August, with Incheon close behind at **38°C**.[1][2] That matters for this market because the contract settles on the highest temperature recorded at Incheon International Airport Station, so the key question is whether the airport can briefly touch the upper end of the forecast band or whether it tops out just below it.[1]

The current crowd pricing at **0% YES** implies the market is treating a qualifying outcome as highly unlikely, but comparable late-summer heat episodes in Korea have shown that a one-degree miss can be decisive when forecast errors are around **1°C**.[10] Historically, early August is one of the warmest periods of the year in Seoul, and climatology still supports unusually hot afternoons even if temperatures ease later in the month.[12]

For traders, the main catalyst is the evolving **Korea Meteorological Administration** guidance, especially any update to the heatwave warning and the short-range forecast for the Seoul–Incheon corridor.[1][8] News coverage on Thursday morning said the heat emergency remains in force, with the western regions expected to stay near **39°C** through the day before conditions ease slightly over the weekend, so intraday cloud cover, sea breeze effects, and any showers near the airport are the factors most likely to determine whether the station prints into the higher range.[1][2]

Sources: 1 · 2 · 3 · 4 · 5

Methodology

Political prediction markets differ structurally from sports betting: thinner liquidity, longer settlement windows, higher sensitivity to single news events. This page shows the live Polymarket quote for Highest temperature in Seoul (Incheon) on August 6? plus platform attributes for the three reference venues, so you can see at a glance where the deepest market for this question sits.

Resolution & payout

Political markets typically settle on official candidate or agency confirmation. Polymarket uses UMA Optimistic Oracle: a proposer posts the outcome with a bond, the two-hour window opens, then the smart contract pays USDC.

Kalshi settles USD via CFTC clearinghouse, with clearly defined resolution sources (e.g. AP race calls for elections). Betfair settles after the official outcome is registered with the league or agency. Manifold is play-money.

UK Frequently Asked Questions

How accurate are political prediction markets?

Historically more accurate than polls. Polymarket's Brier score on US 2024 elections was ~0.11 — better than 538 (~0.14) and every mainstream poll. Markets aggregate information with real skin in the game.

Can prediction markets influence election outcomes?

Markets reflect expectations rather than create them. Studies show public-facing markets can anchor expectations, but don't influence the underlying outcome. Political markets are information, not advocacy.

Which platform has the deepest political liquidity?

Polymarket — by far. US 2024 presidential volume was ~$3.5B vs Kalshi (~$200M) and Betfair (~$120M). Where Polymarket is geo-blocked, brokers like Election Predictions UK route into the same order book at 0% fees.

How fast do political markets react to news?

High-liquidity markets move within seconds to minutes. A Trump tweet on the economy can shift the "Trump 2024" market 2-5 points before mainstream media has written anything.

Are UK election prediction markets available from the UK?

Yes. Betfair Exchange and Smarkets offer UKGC-regulated UK election markets (seat counts, party share, constituency results). Polymarket also lists UK election contracts with deeper global liquidity. Betfair winnings are typically tax-free for UK individuals; Polymarket profits are subject to HMRC CGT.