Highest temperature in Beijing on July 6?

Platform comparison

Market context

The underlying event is a straightforward meteorological observation: the highest temperature recorded at Beijing Capital International Airport on 6 July 2026, measured in degrees Celsius. Historical data frames the current 0% crowd-implied probability for a specific outcome as highly anomalous. July in Beijing typically sees daily highs around 31°C (88°F), rarely dipping below 26°C or exceeding 36°C, with the peak average occurring on 17 July[3]. Recent years have been exceptionally volatile; 2023 saw temperatures reach 40°C, and China recorded its hottest July since records began in 2024, averaging 23.21°C nationally[6][4]. A similar market for 5 July 2026 priced 30°C at 36%, suggesting traders expect warmth but not necessarily record-breaking extremes[2].

Traders must monitor real-time weather feeds from Wunderground, the designated resolution source, and watch for sudden shifts in regional heatwave patterns. No specific government announcements or scheduled economic dependencies drive this contract; the sole catalyst is atmospheric behaviour. Recent reports confirm China is experiencing its highest number of hot days in six decades, with an average of 4.1 days exceeding 35°C this year[5]. While sportsbooks may offer divergent odds on temperature thresholds, the 0% implied probability on this prediction market contradicts the climatology of a month that has consistently broken records, including a June peak of 106°F in Beijing[8]. The divergence between analyst consensus on summer heat and the market’s zero probability suggests a significant mispricing.

Sources: 1 · 2 · 3 · 4 · 5

Methodology

This page reviews Highest temperature in Beijing on July 6? 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 Best Prediction Markets, 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 Best Prediction Markets. 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.