Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via Champions League Prediction) Pick polygram.ink (preferred broker) |
51% | 49% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | See live odds → |
Polymarket (direct) polymarket.com |
51% | 49% | 0% | Geo-blocked in US/UK/EU | USDC, on-chain | See live odds → |
Kalshi kalshi.com |
— | — | Up to 7% per trade | US-only, KYC required | USD | See live odds → |
Betfair Exchange betfair.com |
— | — | 2-5% commission | Full KYC from first trade | GBP / EUR | See live odds → |
Manifold Markets manifold.markets |
— | — | Play-money (mana) | None — play-money | Mana (no cash-out) | See live odds → |
Outcome probabilities
Current market-implied probability for each outcome, from the live order book.
| Outcome | Probability |
|---|---|
| 27°C | 51% |
| 28°C | 37% |
| 26°C | 11% |
| 29°C | 5% |
| 22°C or below | 0% |
| 23°C | 0% |
| 24°C | 0% |
| 25°C | 0% |
| 30°C | 0% |
| 31°C | 0% |
| 32°C or higher | 0% |
Market context
Hong Kong’s daytime high on 3 August will be set by the Hong Kong Observatory’s final daily extract, and this market settles on the exact Celsius range containing that published maximum. The crowd is heavily concentrated at **27°C** and **28°C**, which implies traders are pricing in a muted summer day rather than a heat spike; that sits below the sort of extreme readings that have driven recent headlines in the city, including Observatory maxima above **34°C** elsewhere in 2026.[1][9]
For context, August in Hong Kong is normally hot and humid, with typical monthly ranges cited around the high 20s to low 30s Celsius, so a settlement in the **27–29°C** band would not be unusual if cloud, showers or onshore flow cap the afternoon peak.[4][13] The market’s current **0% YES** price appears to reflect a belief that the published maximum will land outside the specific outcome being backed, but the relevant historical frame is that Hong Kong can still produce sharp intraday spikes when sunshine dominates, with the Observatory and local stations recording far higher values during recent heat events.[3][11]
Traders should watch the Hong Kong Observatory’s short-range forecasts, any updated regional weather text, and the timing of the daily extract publication, because the resolution source only becomes final once the data is posted.[5][10] The key dependency is whether showers and extensive cloud cover persist through the afternoon, as the current market commentary tied to Observatory and numerical-model guidance says that would suppress the high and keep the result near **27–28°C**.[1]
Methodology
Football-specific comparison page for Highest temperature in Hong Kong on August 3?. 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.
- Which sports markets are available?
- Football (soccer) dominates — Champions League, World Cup, Premier League, La Liga, Bundesliga — followed by NFL, NBA, tennis Grand Slams, Formula 1, boxing/MMA. Resolution via official league source confirmation.
- 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.
- 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.
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