Highest temperature in Qingdao on July 7?

Platform comparison

Market context

On 7 July 2026, the highest temperature recorded at Qingdao Jiaodong International Airport will determine the outcome of this prediction market, with the settlement relying on Wunderground’s daily peak data. The current crowd-implied probability for a YES outcome sits at 0%, suggesting the market believes the temperature will fall outside the defined range, likely below the threshold in question.

Historically, Qingdao in July is very warm and breezy, with average highs of 29°C and a 34% chance of rain on any given day[1]. The city regularly sees peak temperatures between 28°C and 32°C, and during heatwave events, highs have reached 33°C, as seen on 9 August 2018[6]. While 40°C has been simulated in some climate models, real-world records rarely exceed 33°C, making extreme outliers improbable[4]. This historical framing suggests the consensus is heavily skewed toward moderate temperatures, with value potentially lying in contrarian bets on a sudden heat spike if atmospheric conditions shift.

Traders should monitor upcoming weather forecasts for Shandong Province, particularly any announcements regarding high-pressure systems or heatwave warnings from the China Meteorological Administration. Recent data from AQI.in indicates that peak heatwaves in Qingdao are rare but possible, with the highest recorded temperature reaching 33°C during such events[6]. A sudden shift in wind patterns or a prolonged period of clear skies could act as a catalyst, pushing temperatures beyond the expected range and creating value for underdog positions. The consensus remains on moderate highs, but the value spot may sit with those betting on an unexpected surge if meteorological dependencies align.

Sources: 1 · 2 · 3 · 4 · 5

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

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 Who Will Win 2026. 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 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.