Highest temperature in Hong Kong on July 5?

Platform comparison

Market context

The Hong Kong Observatory will record the absolute daily maximum temperature in degrees Celsius on 5 July 2026, a single metric that determines the outcome of this on-chain contract. Polymarket prices the YES option at 0%, implying the crowd believes the temperature will not fall within the specific range offered, despite July being the height of summer in Hong Kong.

Historical data and seasonal forecasts frame this near-zero probability as a mispricing of typical summer extremes. The Hong Kong Observatory’s seasonal forecast for July–September 2026 expects normal to above-normal temperatures, while AccuWeather projects daily highs between 87°F and 95°F (30.6°C to 35°C) for the month [2][3]. The average July temperature sits between 28°C and 32°C, with the absolute maximum often reaching 33°C or higher, suggesting the market may be ignoring the consistent thermal intensity of this period [5][8].

Traders should monitor the Hong Kong Observatory’s finalised “Daily Extract” for the specified date, as the market cannot resolve until this official data is published [2]. The key catalyst is the release of the “Absolute Daily Max (deg. C)” figure, which will be measured to one decimal place in Celsius. Recent weather patterns show mainly cloudy conditions with light rain patches, but the ENSO status and climate models still point toward elevated temperatures, making the 0% price a stark contrast to the forecasted heat [2][6]. Conditional tokens on the Polygon network, settled in USDC, will execute automatically once the Observatory’s data is finalized.

Sources: 1 · 2 · 3 · 4 · 5

Methodology

We track Highest temperature in Hong Kong on July 5? 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

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 Polymarket Scam?. 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 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 Scam? 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.