Highest temperature in Qingdao on June 29?

Platform comparison

Market context

On 29 June 2026, the real-world event determining this market is the highest temperature recorded at Qingdao Jiaodong International Airport, with the crowd assigning only a 2% chance to the "YES" outcome. Historical data frames this probability as an underdog play: Qingdao’s June highs typically hover between 22°C and 26°C, with the absolute peak rarely exceeding 28°C, according to long-term climate records [2][5][7]. While a recent anomaly on 1 June saw temperatures surge to 32–35°C, such extremes are outliers rather than norms, and the consensus on 15 June settled firmly at 27°C, reflecting strong model agreement [1][4]. The 2% implied probability suggests the market expects conditions to remain within the typical band, making any spike above the threshold a contrarian value spot if cloud cover thins or sea breezes weaken unexpectedly.

Traders should monitor immediate catalysts: a shift in the East Asian monsoon pattern, sudden reductions in cloud cover, or a weakening of the coastal sea breeze that usually caps Qingdao’s heat. Recent forecasts indicate clear skies and light winds over the next 24 hours, which could push temperatures toward the upper limit of the historical range [8]. If the monsoon weakens further, as suggested by early-season anomalies, the 28°C threshold becomes a plausible value spot for contrarian positions. No official weather announcements are scheduled, but real-time data from Wunderground will resolve the market, so continuous observation of the hourly temperature curve is essential [1]. The consensus remains on the lower side, but the value may sit with those betting on a brief, unseasonal heat spike driven by atmospheric stability.

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

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 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.

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.

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.