Highest temperature in Guangzhou on July 23?

Platform comparison

Market context

Polymarket is pricing the Guangzhou airport temperature contract as if **36°C** is the most likely outcome today, with a **47%** implied chance, while **35°C** sits at **28%**. In practical terms, that means holders are currently assigning the highest weight to a late-morning or early-afternoon maximum in the mid-30s Celsius, even though the market settles strictly against the daily peak recorded at Guangzhou Baiyun International Airport Station on Wunderground. [1]

The current setup is consistent with July climatology in Guangzhou: July averages are hot and humid, with typical daytime highs around **32°C** and frequent rain, which can cap temperatures if cloud cover or showers persist. Current local conditions are already very warm, with AccuWeather showing **91°F** and a **RealFeel®** of **109°F**, underlining how quickly the contract can move if the day turns sunnier or the heat index holds through the afternoon. [2][3]

For a Polymarket user, the key mechanics are straightforward: the market is settled in **USDC** on **Polygon**, and the winning range depends on the final Wunderground high, not on forecasts alone. Traders should watch for any shift in Guangzhou’s daytime cloud cover, rainfall timing, or storm development, because those are the variables most likely to drag the station maximum down from the 36–37°C region or push it into the upper 30s. [1][3]

Sources: 1 · 2 · 3

Methodology

This page reviews Highest temperature in Guangzhou on July 23? 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.

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.

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