Pronóstico: Highest temperature in Hong Kong on July 9?

Platform comparison

Market context

On 9 July 2026, Hong Kong faces the critical question of whether the day’s peak heat will breach the threshold for a “YES” outcome in the prediction market, with current crowd-implied probability sitting at 0%. The Hong Kong Observatory will record the absolute daily maximum temperature in degrees Celsius, measured to one decimal, as the sole resolution source. This date falls within Hong Kong’s hottest month, where historical averages hover near 29°C, yet extreme spikes have occurred under strong subtropical ridges.

Historical precedent frames the current 0% probability as potentially premature. In July 2024, an exceptionally hot month saw the Observatory register a peak of 34.8°C on 7 July, driven by a dominant subtropical ridge over southern China [1]. That month’s mean maximum was 32.4°C, one of the ninth highest on record for July, indicating that single-day extremes can far exceed averages. Traders should note that similar ridge conditions in recent years have produced temperatures above 33°C, suggesting the 0% line may not fully account for outlier potential.

Key catalysts include the finalisation of the “Daily Extract” data from the Hong Kong Observatory, which will confirm the absolute maximum once published [5]. Traders must monitor real-time forecasts showing daily highs ranging from 85°F to 96°F (approximately 29.4°C to 35.6°C) for July 2026, with overnight lows between 79°F and 83°F [2]. Any sudden intensification of the subtropical ridge or lack of cloud cover could push temperatures toward the upper forecast range, potentially shifting market sentiment before the settlement window closes on 2026-07-09T12:00:00Z.

Sources: 1 · 2 · 3 · 4 · 5

Methodology

Football-specific comparison page for Pronóstico: Highest temperature in Hong Kong on July 9?. Polymarket's live quote (Polygon order book) plus platform attributes for the three reference venues. Sports markets reward liquidity — Polymarket and Betfair are materially deeper than Kalshi (US-focused) or Manifold (play-money).

Resolution & payout

Sports markets typically settle on official final-whistle plus league confirmation. Polymarket uses UMA Optimistic Oracle with a source URL per contract — usually official league data feeds or ESPN/Soccerway. Two-hour dispute window, then smart-contract payout in USDC.

FAQ

Are prediction markets better than sports betting?

Prediction markets tend toward tighter odds than bookmakers because they use peer-to-peer exchange rather than bookmaker margin. On major matches, Polymarket quotes typically sit 2-5% closer to the true probability model than bet365 or DraftKings.

When do sports markets resolve?

Typically within hours of the official final whistle. Polymarket uses UMA Optimistic Oracle with source URLs pointing at official league data feeds — e.g. the Premier League for EPL markets, UEFA for Champions League, FIFA for World Cup.

What are live sports odds on Polymarket?

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What's the difference between match odds and outright odds?

Match odds cover a single game ("Bayern beats BVB"). Outright odds are long-term aggregates ("Bayern wins the league"). Outright markets have deeper liquidity; match markets have faster resolution.

Can I import form data and lineups?

This page shows the live Polymarket quote as an implied probability. Form data and lineups must be researched separately via sports data providers (e.g. Soccerway, ESPN, FBref) — we surface the market probability, not the sport analysis.