Highest temperature in Seoul on June 23?

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Market context

Seoul is experiencing an early surge of June heat, with temperatures climbing well above the seasonal average as the North Pacific high-pressure system intensifies. Recent data shows the city hit 91°F on 19 June 2026, marking one of the hottest days in the region’s recent history and setting a concerning precedent for the remainder of the month[3]. This spike aligns with broader trends across South Korea, where 59 out of 97 weather stations recorded their highest daily average temperatures for June between Saturday and Monday[8].

Historically, Seoul’s June highs typically range from 77°F to 81°F, rarely exceeding 87°F, though extreme heat events have pushed temperatures to 39.6°C in past summers[1][7]. The all-time national record of 41.0°C, set in Hongcheon in 2018, remains a distant benchmark but underscores the potential for record-breaking conditions under sustained high-pressure influence[2][5]. Given these patterns, the current 0% YES probability for a specific temperature range appears to reflect caution rather than dismissal of extreme heat potential.

Traders should monitor upcoming declarations from the Korea Meteorological Administration regarding heat advisories and any scheduled climate conventions that could signal policy responses to rising temperatures[6]. Recent campaign-finance disclosures from local officials may also reveal funding shifts toward heat mitigation, which could influence public perception and market sentiment. The market is leaning on the catalyst of sustained high-pressure activity, as confirmed by the Korea Meteorological Administration’s report on South Korea’s second-hottest July since 1973[6].

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 on June 23? 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

For political markets the resolution source is decisive. Polymarket defines a concrete source per contract (e.g. AP, Reuters, official electoral commission) and uses the UMA Optimistic Oracle as the on-chain dispute mechanism. With a clearly defined outcome the USDC payout lands within minutes of the final confirmation.

FAQ

Is this market available outside the US?

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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.

How fast are USDC deposits?

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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.