Highest temperature in Chengdu on June 20?

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Market context

On 20 June 2026, the Chengdu Shuangliu International Airport Station will record its peak temperature for the day, a real-world event that determines the outcome of this prediction market. The crowd currently assigns a 0% implied probability to the “YES” outcome, suggesting near-total consensus that the temperature will not exceed the specified threshold. This aligns with historical patterns: June in Chengdu typically sees highs between 28–34°C, with extreme values above 35°C occurring only occasionally in mid-to-late June, and rarely persisting beyond July–September heatwaves[2][3][5].

The underdog here is the possibility of a sudden heat spike, which would represent significant value if the market misprices the risk. Traders should monitor upcoming weather forecasts and any regional announcements regarding heat advisories or atmospheric conditions that could trigger unseasonal warmth. Recent data from Wunderground confirms that while average June highs hover around 31°C, isolated days can reach 35–39°C, particularly in late June[4][5]. A contrarian angle would be to assess whether current cloud cover trends—increasing from 45% to 60% over the month—might suppress temperatures, making the 0% probability even more justified[2]. The consensus remains firmly on the lower end, but value may lie in questioning whether a rare hot day is being overlooked.

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). The odds column is filled only where we have clean data — that avoids the made-up numbers that get a network demoted when search engines cross-check against the source venue.

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?

On Who Will Win 2026, which mirrors the Polymarket order book at 0% fees. Kalshi charges up to 7% per trade; Betfair Exchange takes 2-5% commission on net winnings.

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 it cost to trade on Who Will Win 2026?

Zero. Who Will Win 2026 routes every order to the live Polymarket order book; the only cost is the Polygon network fee, typically under $0.01 per transaction.

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?

Not under $1,500 of lifetime trading volume. Above that threshold, Who Will Win 2026 triggers a quick verification flow that finishes in minutes.