Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via Polymarket Qué Es) Pick polygram.ink (preferred broker) |
93% | 7% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | See live odds → |
Polymarket (direct) polymarket.com |
93% | 7% | 0% | Geo-blocked in US/UK/EU | USDC, on-chain | See live odds → |
Kalshi kalshi.com |
— | — | Up to 7% per trade | US-only, KYC required | USD | See live odds → |
Betfair Exchange betfair.com |
— | — | 2-5% commission | Full KYC from first trade | GBP / EUR | See live odds → |
Manifold Markets manifold.markets |
— | — | Play-money (mana) | None — play-money | Mana (no cash-out) | See live odds → |
Outcome probabilities
Current market-implied probability for each outcome, from the live order book.
| Outcome | Probability |
|---|---|
| 29°C | 93% |
| 30°C or higher | 8% |
| 20°C or below | 0% |
| 21°C | 0% |
| 22°C | 0% |
| 23°C | 0% |
| 24°C | 0% |
| 25°C | 0% |
| 26°C | 0% |
| 27°C | 0% |
| 28°C | 0% |
Market context
The highest temperature recorded at Incheon International Airport on 7 July 2026 will likely fall within the mid-to-high 20s Celsius, with long-term averages suggesting a daytime maximum near 28°C, though humidity can push the “feels like” temperature over 34°C during peak afternoon hours. This real-world expectation frames the current 0% YES probability on Polymarket, which prices the contract as virtually certain that the temperature will not exceed the upper threshold implied by the market’s “YES” condition. On-chain, this reflects USDC settlement on Polygon using conditional tokens, where liquidity has overwhelmingly backed the “NO” outcome, signalling strong market consensus that extreme heat beyond the defined range is improbable.
Historical July data for Seoul consistently shows average highs between 25°C and 30°C, with occasional spikes nudging 30°C but rarely sustained extremes above that, as noted in climate guides from Weather2Travel and AccuWeather. The monsoon season (Jangma), which typically lasts from late June to mid-July, often brings heavy but short rainfall that temporarily cools temperatures, reducing the likelihood of record-breaking heat on a single day like 7 July. This pattern, combined with humidity levels above 80%, creates a climate where intense bursts of rain interrupt prolonged heatwaves, making a single-day extreme outlier statistically unlikely.
Traders should monitor the Korea Meteorological Administration’s short-range forecasts, particularly the 60% probability of rain and slight precipitation intensity expected for the period, which could suppress peak temperatures. Recent updates from KMA indicate a “feel” temperature of 30°C with actual readings at 28°C, suggesting that cloud cover and moisture will limit solar heating. Additionally, the timing of the Sinchon Water Gun Festival in late July, while not directly affecting 7 July, signals broader seasonal trends of water-based cooling events that may influence local weather dynamics. No major heat advisories have been issued for early July, reinforcing the market’s low confidence in extreme outcomes.
Methodology
This page is a comparison snapshot: one live quote, four reference venues with their key attributes, and a single execution path — every trade button routes to Polymarket Qué Es, which mirrors the Polymarket order book directly.
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 Polymarket Qué Es. 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.
- How fast are USDC deposits?
- Polygon credits deposits after 12 confirmations — usually under 30 seconds. Withdrawals follow the same path and land back in your wallet within minutes.
- 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.
Trade Pronóstico: Highest temperature in Seoul on July 7? on Polymarket Qué Es
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