Highest temperature in Seoul on July 20?

Platform comparison

Market context

Seoul is experiencing a sweltering heatwave as July 20, 2026, unfolds, with the Incheon International Airport station serving as the official benchmark for this weather prediction. The current crowd-implied probability of 0% for a specific high-temperature outcome suggests traders believe the recorded temperature will fall outside the proposed range, likely due to the city’s recent trajectory of extreme heat. Historical data indicates that early July in Seoul has already seen record-breaking temperatures, with 37.1°C recorded in 2025, marking the highest for that period since 1908 [3].

The humid continental climate of Seoul typically produces average annual highs of 17.8°C, yet July consistently delivers significantly warmer conditions, often exceeding 30°C [4]. Last year, South Korea experienced its second-hottest July on record, with a nationwide average of 27.1°C, reinforcing the pattern of intensifying summer heat [5]. These comparable cases frame the current 0% probability as a potential mispricing, given the statistical likelihood of temperatures surpassing historical averages during this volatile period.

Traders should monitor real-time updates from Wunderground, the designated resolution source, for the highest temperature recorded at the Incheon station throughout the day [1]. While no political debates or campaign disclosures directly influence weather, the Korea Meteorological Administration’s ongoing climate reports act as the primary catalyst for temperature expectations [5]. Any sudden shifts in atmospheric pressure or humidity levels reported by local weather agencies could rapidly alter the settlement outcome, making continuous observation of the official data feed essential for accurate positioning.

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 July 20? 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

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.

What resolution source is used for elections?

Polymarket defines the source per contract — usually Associated Press (AP Race Call), Reuters or the official electoral commission. The source is stated in contract details before the market opens.

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 Trump Prediction route into the same order book at 0% fees.

Are political prediction markets legal in my country?

It varies. They sit in legal gray areas in most jurisdictions. Polymarket is geo-blocked from US/UK/EU; some broker frontends have a different geo footprint. Trade only with capital you can afford to lose, and only if you understand the legal status in your jurisdiction.

Which political events have the biggest volume?

US Presidential election, party nominations (DNC/RNC), Senate majorities, individual state outcomes (Pennsylvania, Michigan, Wisconsin), and major European elections. Peak markets reach $50-500M per event.