Highest temperature in Guangzhou on July 6?

Platform comparison

Market context

On 6 July 2026, the highest temperature recorded at Guangzhou Baiyun International Airport will determine the outcome of a prediction market where the crowd currently assigns zero per cent probability to the “YES” range. This real-world event hinges on a single day’s peak heat in one of China’s most torrid cities during its hottest month, when daily highs typically hover around 33°C (91°F), rarely dipping below 29°C (85°F) or exceeding 36°C (96°F) [1][3].

Historical patterns and comparable July data frame this zero probability as highly questionable. July is consistently Guangzhou’s peak heat month, with average temperatures of 28.7°C and recorded highs reaching 36°C [2][8]. Even recent visitor accounts describe “insane heat” with temperatures over 30°C and persistent sweating, contradicting any assumption that extreme warmth is absent [6]. The divergence between sportsbook lines implying safety and the prediction market’s 0% YES probability suggests a significant mispricing, as analyst consensus on summer heat in the region strongly supports high temperatures [5].

Traders should monitor Wunderground’s live daily updates for the station and any sudden meteorological announcements regarding cloud cover or downpours, which are common in early July but do not eliminate peak heat [2]. A recent forecast for July 2026 confirms daily highs between 86°F and 96°F, reinforcing that the “YES” range is far from improbable [3]. The settlement window closing on 6 July at 12:00 UTC means real-time data will resolve the contract, making immediate tracking of temperature spikes essential rather than relying on the current crowd-implied certainty of a cool day.

Sources: 1 · 2 · 3 · 4 · 5

Methodology

We track Highest temperature in Guangzhou 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 Best Prediction Markets UK. 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.

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.

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 Best Prediction Markets UK trigger KYC only above $1,500 of lifetime trading volume; under that you trade pseudonymously with a single wallet address.