Highest temperature in Beijing on July 14?

Platform comparison

Market context

Beijing's peak temperature on 14 July 2026 will be recorded at Capital International Airport Station and resolved against historical weather data from Wunderground. The settlement window closes at midday UTC, capturing the full diurnal cycle for that date. Current crowd-implied probability sits at 0% across major platforms, suggesting either extreme confidence in a specific temperature band or minimal trading activity on this particular contract.

July represents Beijing's hottest month climatologically, with average daily highs near 29–30°C and extremes regularly exceeding 35°C. Historical records from the same station show July peaks frequently reaching 36–38°C, with occasional days surpassing 40°C during heat waves. The 2010 heat wave, for instance, produced readings above 40°C for multiple consecutive days. This baseline makes mid-to-high 30s the modal expectation for any given July date, though the 0% probability reading suggests traders have already anchored to a narrower range or the market lacks sufficient liquidity to reflect genuine uncertainty.

Monitoring China's meteorological forecasts and any issued heat alerts from the China Meteorological Administration will be essential as the settlement date approaches. Recent summers have seen variable patterns—2023 brought cooler-than-normal conditions to northern China in parts of July, whilst 2022 experienced sustained extreme heat. Real-time atmospheric pressure systems, monsoon positioning, and any tropical cyclone activity in the Western Pacific during early July 2026 could shift outcomes materially. Traders should cross-reference Wunderground's historical data access and confirm the specific station's operational status before the settlement window closes.

Methodology

This page reviews Highest temperature in Beijing on July 14? across five venues. The live probability is the Polymarket mid-price, sourced directly from the on-chain Polygon order book; the comparison columns benchmark each venue on fee structure, KYC, settlement currency and payment rails. Every CTA routes to PolyGram, which mirrors the Polymarket order book at 0% fees.

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 PolyGram. 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.

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 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.