Pronóstico: Highest temperature in Hong Kong on July 5?

Platform comparison

Market context

The Hong Kong Observatory expects July 5, 2026, to deliver peak temperatures near 31°C to 32°C under typical early-summer humidity and light winds, with overnight lows hovering around 27°C. On Polymarket, this weather contract currently prices the "31°C" outcome at 45% and "32°C" at 41%, while the "24°C or below" range sits at a negligible 0% probability despite $8,913 in volume. Traders operating on the Polygon network using USDC conditional tokens are betting on normal to above-normal temperatures, a view reinforced by the seasonal forecast for July–September 2026 which cites normal to above-normal heat driven by the latest ENSO status[4].

Historical data frames this current pricing as rational, given that Hong Kong’s average July high sits between 32°C and 28°C, with daily peaks frequently reaching 32°C or higher[6]. Recent forecasts for July 5 indicate light rain and temperatures between 27°C and 31°C, consistent with the market’s frontrunner selection[8]. The only significant catalyst to watch is a strengthened sea breeze or increased cloud cover on the settlement date, which could depress the daily maximum toward 30°C and shift conditional token allocations[10]. Traders must monitor the Hong Kong Observatory’s "Daily Extract" publication schedule, as the market cannot resolve until the "Absolute Daily Max" data is finalized and officially released[9].

Sources: 1 · 2 · 3 · 4 · 5

Methodology

Methodologically we separate two layers: the live probability (Polymarket mid-price) and the platform attributes (fee, KYC, settlement currency, payment rails). That keeps the comparison honest — a single canonical probability across the row, with the venue-by-venue trade-offs spelt out in the columns next to it.

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

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.

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