Pronóstico: Highest temperature in Beijing on July 6?

Platform comparison

Market context

The underlying real-world event is straightforward: on 6 July 2026, what will be the highest temperature recorded at Beijing Capital International Airport, measured in degrees Celsius? Today, Polymarket prices the YES contract for the 40°C+ range at 0%, implying the crowd sees no chance of hitting that extreme. This zero probability stands in stark contrast to historical patterns, where Beijing’s July highs routinely reach 35–38°C, with 40°C+ events documented in recent years. In 2023, the city hit 40°C, and southern suburb observatories recorded 40.1°C on 6 July in a prior year[1][5]. Weather Spark notes July daily highs average 88°F (31°C), rarely dropping below 78°F (26°C) but often exceeding 96°F (36°C)[2]. Reuters confirms China’s July 2024 was its hottest month since records began, averaging 23.21°C, surpassing the 2017 peak[3][7].

Traders should monitor upcoming heatwave forecasts and humidity levels, as high moisture can amplify temperature readings. The Beijing Meteorological Bureau typically releases weekly extreme weather bulletins, and any mention of a “scorching heatwave” could shift probabilities. Recent reports highlight China’s record-breaking hot days, with 4.1 days exceeding 35°C in 2023—the highest since 1961[4]. YouTube footage shows Beijing breaking June records with 106°F (41°C), suggesting summer extremes are escalating[8]. On-chain mechanics remain critical: USDC settlements on Polygon via conditional tokens mean liquidity can shift rapidly if new data emerges. Watch Wunderground’s hourly updates for the airport station, as resolution hinges on its official daily high. No moralising is needed—just track the data, as the market reflects real-time climatology.

Sources: 1 · 2 · 3 · 4 · 5

Methodology

We track Pronóstico: Highest temperature in Beijing on July 6? 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

Polymarket-based markets settle through the UMA Optimistic Oracle on Polygon. A proposer submits the outcome, a two-hour challenge window opens, and unchallenged proposals finalise the resolution. Payouts settle automatically in USDC the moment the result is final — no bookmaker, no delay.

Kalshi-based markets settle in USD via the CFTC-regulated clearinghouse. Betfair Exchange settles in GBP/EUR net of commission. Manifold is play-money and does not pay out real funds.

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 Qué Es. 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'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.

Do I need to KYC for this market?

On Polymarket directly, no — it's wallet-based. Intermediary brokers like Polymarket Qué Es 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.