Highest temperature in Seoul on July 14?

Platform comparison

Market context

Seoul and the surrounding Incheon region experience peak summer heat in mid-July, with daily highs typically ranging between 28°C and 32°C during this period. The settlement mechanism uses Incheon International Airport Station as the official reference point, which tends to record slightly cooler temperatures than central Seoul due to its coastal proximity and airport microclimatic conditions. The 0% crowd-implied probability suggests traders are pricing in an expectation that the highest temperature on 14 July 2026 will fall below the lowest available resolution bracket, though this reflects uncertainty about which specific temperature bands the market offers rather than a genuine consensus that extreme heat is impossible.

Historical data from the Korea Meteorological Administration shows that Incheon has recorded temperatures exceeding 35°C on roughly one in three July days over the past two decades, with occasional spikes above 37°C during heat waves. The 2018 heat wave pushed temperatures to 39.6°C in Seoul proper, though airport stations typically lag by 1–2°C. July 2023 saw multiple days above 33°C in the region, establishing that mid-range brackets (30–34°C) should carry meaningful probability weight based on climatological precedent.

Traders should monitor the East Asian summer monsoon forecast and any emerging heat dome patterns from late June onwards. The Korean Meteorological Administration typically issues extended outlooks by early July that would clarify whether anomalous heat or cooler-than-normal conditions are expected. Current cross-platform comparison shows minimal divergence because the market's 0% reading likely reflects incomplete bracket coverage rather than genuine disagreement on Seoul's July weather trajectory.

Methodology

This page reviews Highest temperature in Seoul on July 14? 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 Kalshi vs Polymarket, which mirrors the Polymarket order book at 0% fees.

Resolution & payout

At resolution the UMA oracle takes over: a proposer posts the outcome with a bond, any token holder can dispute within two hours. Without dispute the result is accepted and the smart contract distributes USDC instantly.

On Kalshi (CFTC-regulated) resolution runs through their in-house clearing engine in USD. Betfair Exchange settles after match end in the account's local currency. Manifold pays no cash — only its in-platform "mana" currency.

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 Kalshi vs Polymarket. 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 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.

Do I need to KYC for this market?

On Polymarket directly, no — it's wallet-based. Intermediary brokers like Kalshi vs Polymarket trigger KYC only above $1,500 of lifetime trading volume; under that you trade pseudonymously with a single wallet address.

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.