Highest temperature in Hong Kong on July 23?

Platform comparison

Market context

Polymarket prices this contract with **34°C** leading at **46%**, while **33°C** sits second at **36%**; the market is therefore leaning towards a very warm but not extreme Hong Kong afternoon, with the remaining probability spread across higher and lower bands.[1] Because the market settles on the Hong Kong Observatory’s **Absolute Daily Max** in Celsius, the relevant price is the highest recorded temperature for the day, not a forecast of the mean or the temperature at a fixed time, and the outcome will be resolved only after the Observatory publishes the daily extract.[1]

For context, July is typically Hong Kong’s hottest month, with an average high around **32°C** and frequent heavy rain or storms, so the market’s centre of gravity around 33–34°C is close to the seasonal norm rather than an outlier.[2] That matters for reading the current **0% YES** crowd-implied probability: on Polymarket’s USDC-settled, Polygon-based conditional tokens, a zero print usually signals that traders see the named yes-band as effectively unreachable, but it can also reflect a thin book or a mispriced range before the official extract lands.[1]

The main catalysts now are the Observatory’s published daily figures and any late-day weather development that could lift the absolute maximum into a higher bracket before settlement. Traders should watch for the Hong Kong Observatory’s final daily extract, since the market cannot resolve until that data is posted and the contract’s range is matched to the recorded Celsius reading to one decimal place.[1]

Sources: 1 · 2

Methodology

This page reviews Highest temperature in Hong Kong 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

Settlement runs on-chain. Polymarket's contract logic separates YES and NO shares as conditional tokens; at resolution the winning share lifts to $1.00 and the losing one to $0. The outcome input comes from the UMA Optimistic Oracle, which secures against bad resolution with a bond + dispute window.

Once finalised, the smart contract pays USDC to the holders' wallets within minutes — no withdrawal fees beyond Polygon network gas. Kalshi settles in USD via CFTC clearance, Betfair in account currency net of commission, Manifold in play-money mana with no cash-out.

FAQ

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.

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 PolyGram 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.