Highest temperature in Qingdao on July 7?

Platform comparison

Market context

The underlying real-world event is the highest temperature recorded at Qingdao Jiaodong International Airport on 7 July 2026, with current Polymarket pricing showing a 0% probability for any outcome above 30°C. This market, settled on USDC via Polygon using conditional tokens, currently leads with the 26°C outcome at 22% probability, reflecting a tight consensus around typical summer highs rather than extreme heat spikes[3].

Historical climatology for Qingdao in July consistently places average daily highs between 23°C and 29°C, with 29°C being the typical peak under normal conditions[1][6]. While record-breaking events have occurred—such as the 39°C spike in July 2002—these are rare anomalies, and recent forecasts for July 2026 predict daily highs ranging from 26°C to 32°C, supporting the market’s focus on moderate temperatures[4][7]. The 0% probability for outcomes above 30°C suggests traders view extreme heat as statistically unlikely given current atmospheric patterns.

Traders should monitor official weather announcements from the China Meteorological Administration and real-time updates from Wunderground, the designated resolution source, for any sudden shifts in temperature trends[2]. Recent thundery showers and high humidity reported for 7 July 2026 may suppress peak temperatures, reinforcing the likelihood of outcomes near 26°C[2]. Additionally, seasonal climate data indicates that July is Qingdao’s warmest month, yet sustained highs above 30°C remain uncommon unless driven by specific heatwave conditions, which are not currently forecasted[5][8].

Sources: 1 · 2 · 3 · 4 · 5

Methodology

We track Highest temperature in Qingdao on July 7? across the five venues with material prediction-market liquidity. The probability shown is the live Polymarket mid; the comparison rows summarise how each venue treats the underlying contract — fees, KYC thresholds, settlement currency, deposit options. The highlighted row marks the cheapest route into Polymarket's order book.

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

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'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 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.