Highest temperature in Hong Kong on July 15?

Platform comparison

Market context

Hong Kong will face its peak July heat on 15 July 2026, with the Hong Kong Observatory set to record the day’s absolute maximum temperature in degrees Celsius. The prediction market currently prices the YES outcome at 0%, implying the crowd believes the temperature will fall outside the specific range offered, likely due to expectations of a cooler day or a mismatch in the range definition.

Historically, mid-July in Hong Kong sees daily highs averaging around 31°C, with lows near 27°C, though extreme heatwaves can push temperatures above 34°C [1]. Comparable cases from recent years show that while 31°C is typical, the absolute maximum often fluctuates by 2–3 degrees depending on humidity and cloud cover. The 0% probability suggests traders anticipate the recorded maximum will not hit the upper threshold of the market’s range, possibly expecting a value closer to the seasonal average rather than an outlier.

Traders should monitor the Hong Kong Observatory’s Daily Extract for the finalized “Absolute Daily Max” once published, as this is the sole resolution source. No immediate weather announcements are expected before the settlement window ends at 12:00 UTC on 15 July, but real-time updates from local meteorological services may shift sentiment if a sudden heat spike occurs. The on-chain mechanics on Polygon, settled in USDC via conditional tokens, mean liquidity will remain thin until the data is confirmed, with no catalysts other than the official temperature release driving price movement.

Sources: 1 · 2

Methodology

This page is a comparison snapshot: one live quote, four reference venues with their key attributes, and a single execution path — every trade button routes to PolyGram, which mirrors the Polymarket order book directly.

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

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.