Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via Who Will Win) Pick polygram.ink (preferred broker) |
99% | 1% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | Live odds → |
Polymarket (direct) polymarket.com |
99% | 1% | 0% | Geo-blocked in US/UK/EU | USDC, on-chain | Live odds → |
Kalshi kalshi.com |
— | — | Up to 7% per trade | US-only, KYC required | USD | Live odds → |
Betfair Exchange betfair.com |
— | — | 2-5% commission | Full KYC from first trade | GBP / EUR | Live odds → |
Manifold Markets manifold.markets |
— | — | Play-money (mana) | None — play-money | Mana (no cash-out) | Live odds → |
Outcome probabilities
Current market-implied probability for each outcome, from the live order book.
| Outcome | Probability |
|---|---|
| 28°C | 99% |
| 30°C | 1% |
| 21°C or below | 0% |
| 22°C | 0% |
| 23°C | 0% |
| 24°C | 0% |
| 25°C | 0% |
| 26°C | 0% |
| 27°C | 0% |
| 29°C | 0% |
| 31°C or higher | 0% |
Market context
On 9 July 2026, the Qingdao Jiaodong International Airport Station will record its peak temperature, a real-world event that determines the outcome of this prediction market. Historically, July in Qingdao sits within the warm season, with mean maximum temperatures hovering between 25°C and 26°C, placing outcomes near the climatological centre rather than the extremes[3]. The city’s hottest recorded day reached 33.1°C in August 2018, while the average annual temperature is just 12.7°C, indicating that July heat is significant but rarely extreme[1][5]. This historical framing suggests the current 0% implied probability for a specific high-temperature range may be misaligned with typical July variability, where values often cluster around the mid-25°C mark rather than deviating sharply.
Traders should monitor daily weather forecasts and any sudden shifts in regional cloud cover or sea breeze patterns, which are the primary catalysts for temperature fluctuations in coastal Qingdao. Recent data from AccuWeather for June 2026 highlights the importance of tracking daily high/low projections, as these often signal early trends for July conditions[8]. The consensus appears to favour lower-temperature ranges, yet contrarian value may sit in the 25°C–26°C bracket, where historical averages consistently align. With the settlement window ending on 9 July 2026 at 12:00 UTC, the market remains open to contrarian angles that challenge the prevailing 0% probability, especially given the documented stability of July peaks in this region.
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 Who Will Win, which mirrors the Polymarket order book directly.
Resolution & payout
Settlement runs on-chain. Polymarket's contract logic separates YES and NO shares as conditional tokens; at resolution the winning share lifts to $1.00 and the losing one to $0. The outcome input comes from the UMA Optimistic Oracle, which secures against bad resolution with a bond + dispute window.
Once finalised, the smart contract pays USDC to the holders' wallets within minutes — no withdrawal fees beyond Polygon network gas. Kalshi settles in USD via CFTC clearance, Betfair in account currency net of commission, Manifold in play-money mana with no cash-out.
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 Who Will Win. Kalshi charges up to 7% per trade; Betfair Exchange takes 2-5% commission on net winnings.
- Is this market available outside the US?
- Polymarket itself is geo-blocked in the US/UK/EU. Always check the legal status of prediction markets in your jurisdiction before trading.
- 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 Who Will Win trigger KYC only above $1,500 of lifetime trading volume; under that you trade pseudonymously with a single wallet address.
Trade Highest temperature in Qingdao on July 9? on Who Will Win
Live order book, 0% fees, USDC settlement in seconds.
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