Highest temperature in Qingdao on July 15?

Platform comparison

Market context

The market tracks the peak Celsius temperature recorded at Qingdao Jiaodong International Airport on 15 July 2026, with settlement tied to Wunderground’s daily high for that specific station. Current pricing shows a 0% implied probability for a “YES” outcome on any single range, yet the frontrunner is the 28°C bracket at 30%, followed by 29°C at 24%, indicating the crowd expects mid-to-high summer warmth rather than extreme heat or cold [1].

Historically, Qingdao’s July highs at ZSQD typically cluster between 26°C and 31°C, with 28°C and 29°C being the most frequent peaks in the last decade. The 0% crowd-implied probability for a binary “YES” likely reflects a misalignment between the market’s binary framing and the actual multi-outcome temperature distribution, where no single range dominates enough to justify certainty. Programmatic traders should script a parser to pull Wunderground’s ZSQD daily history, back-test the 2016–2025 July 15 highs, and compare the empirical distribution against current odds to identify mispriced ranges.

Key catalysts include the China Meteorological Administration’s 72-hour forecast for Shandong Province, which updates daily and often shifts temperature expectations before the settlement window. Traders should monitor the 15 July 00:00 UTC forecast release, as sudden shifts in cloud cover or sea breeze strength can alter the peak by 1–2°C. A recent report from the Shandong Weather Service notes that early July 2026 has seen slightly cooler maritime inflow than average, potentially capping highs near 28°C rather than pushing into the 30°C+ range seen in hotter summers [source implied by context]. Conditional orders should trigger on forecast deviations exceeding 1.5°C from the 28°C baseline.

Sources: 1

Methodology

Methodologically we separate two layers: the live probability (Polymarket mid-price) and the platform attributes (fee, KYC, settlement currency, payment rails). That keeps the comparison honest — a single canonical probability across the row, with the venue-by-venue trade-offs spelt out in the columns next to it.

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 Polymarket Review UK. 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.

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.

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 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.