Lowest temperature in Hong Kong on July 31?

Platform comparison

Market context

Hong Kong’s low this morning is being shaped by a typical late-July setup: hot, humid air, showers and thunderstorms, with the Observatory warning that a thunderstorm warning issued at 6:00 a.m. has been extended to 11:00 a.m. today.[10] Forecasts for Hong Kong today and through the month keep overnight lows clustered in the mid-to-high 20s Celsius, with monthly guides showing July lows commonly around 26C to 28C and AccuWeather’s July 2026 outlook putting lows between 79F and 82F, or roughly 26C to 28C.[1][13][16]

That framing matters for the market because a “YES” would need the Hong Kong Observatory’s final “Absolute Daily Min (deg. C)” for 31 July to land in the settlement band, and the current 3% crowd price implies traders are treating that as a rare outcome rather than a normal summer reading. Historical July patterns in Hong Kong are usually sticky: the month is typically the hottest and muggiest part of the year, with average lows near 26C to 27C and only modest day-to-day variation, so the market is effectively betting against an unusually cool pre-dawn reading.[13][16][19]

The main catalysts are any late-morning thunderstorm evolution, changes in cloud cover and rainfall, and whether the Observatory’s daily extract is published without an anomalously low floor caused by rain-cooled air or a brief surge of offshore flow. Traders should watch the Hong Kong Observatory’s warning updates and the evening/overnight forecast cycle, because those are the pieces most likely to shift the minimum temperature before the settlement window closes.[3][8][10]

Sources: 1 · 2 · 3 · 4 · 5

Methodology

Football-specific comparison page for Lowest temperature in Hong Kong on July 31?. 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?

Some top-tier matches stay open during play — you can trade the half-time probability in the 70th minute. Polymarket mid-prices update second-by-second; any frontend mirroring the order book shows the same movement.

How fast do sports winnings settle?

Once the official league outcome is logged in the UMA Oracle (typically 1-2 hours after the final whistle), Polymarket's smart contract triggers USDC payout. To your wallet within minutes.

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.