Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via Election Predictions UK) Pick polygram.ink (preferred broker) |
44% | 56% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | Trade this market → |
Polymarket (direct) polymarket.com |
44% | 56% | 0% | Geo-blocked in US/UK/EU | USDC, on-chain | Trade this market → |
Kalshi kalshi.com |
— | — | Up to 7% per trade | US-only, KYC required | USD | Trade this market → |
Betfair Exchange betfair.com |
— | — | 2-5% commission | Full KYC from first trade | GBP / EUR | Trade this market → |
Manifold Markets manifold.markets |
— | — | Play-money (mana) | None — play-money | Mana (no cash-out) | Trade this market → |
Outcome probabilities
Current market-implied probability for each outcome, from the live order book.
| Outcome | Probability |
|---|---|
| 31°C | 44% |
| 30°C | 36% |
| 29°C | 9% |
| 32°C | 8% |
| 33°C | 2% |
| 24°C or below | 0% |
| 25°C | 0% |
| 26°C | 0% |
| 27°C | 0% |
| 28°C | 0% |
| 34°C or higher | 0% |
Market context
The underlying event is the measurement of Hong Kong’s peak daily temperature on 6 July 2026, as recorded by the Hong Kong Observatory and published in its official Daily Extract. With the crowd-implied probability of a YES outcome at 0%, the market currently treats any temperature above the highest defined range as impossible, suggesting traders expect the reading to fall within the lowest bracket. This extreme positioning contrasts sharply with seasonal forecasts indicating normal to above-normal temperatures for July–September 2026, driven by current ENSO conditions and multi-model consensus [1].
Historically, Hong Kong’s July highs regularly exceed 33°C, with AccuWeather forecasting daily highs between 30°C and 35°C (86°F–95°F) for July 2026 [3]. Past data from late June 2026 shows a peak of 33.1°C (91.6°F) on 24 June [6], reinforcing that temperatures in the 30°C+ range are typical. The 0% YES probability appears misaligned with these comparable cases, unless the market’s highest range is set unusually low or the crowd anticipates an unprecedented cooling anomaly.
Traders should monitor the Hong Kong Observatory’s Daily Extract once finalized, as resolution depends entirely on this official source [7]. Key catalysts include any sudden shifts in regional weather patterns, such as tropical cyclone activity or monsoon interruptions, which could suppress temperatures. While no scheduled political debates or campaign-finance disclosures directly affect weather, broader climate declarations from regional authorities may influence public perception of heat trends. The market leans on the Observatory’s data release as its primary catalyst, with no secondary political events cited in recent reporting [1].
Methodology
This page tracks Highest temperature in Hong Kong on July 6? across four political prediction venues. Live odds come from the Polymarket order book (the deepest political prediction-market book). Kalshi is the CFTC-regulated US alternative, Betfair the established UK sports-exchange with politics markets, Manifold the open play-money variant. For users geo-blocked from Polymarket directly, brokers like Election Predictions UK provide a 0%-fee route into the same order book.
Resolution & payout
For political markets the resolution source is decisive. Polymarket defines a concrete source per contract (e.g. AP, Reuters, official electoral commission) and uses the UMA Optimistic Oracle as the on-chain dispute mechanism. With a clearly defined outcome the USDC payout lands within minutes of the final confirmation.
FAQ
- How accurate are political prediction markets?
- Historically more accurate than polls. Polymarket's Brier score on US 2024 elections was ~0.11 — better than 538 (~0.14) and every mainstream poll. Markets aggregate information with real skin in the game.
- Which platform has the deepest political liquidity?
- Polymarket — by far. US 2024 presidential volume was ~$3.5B vs Kalshi (~$200M) and Betfair (~$120M). Where Polymarket is geo-blocked, brokers like Election Predictions UK route into the same order book at 0% fees.
- How fast do political markets react to news?
- High-liquidity markets move within seconds to minutes. A Trump tweet on the economy can shift the "Trump 2024" market 2-5 points before mainstream media has written anything.
- Are political prediction markets legal in my country?
- It varies. They sit in legal gray areas in most jurisdictions. Polymarket is geo-blocked from US/UK/EU; some broker frontends have a different geo footprint. Trade only with capital you can afford to lose, and only if you understand the legal status in your jurisdiction.
- Why do Polymarket and Kalshi differ on elections?
- Kalshi must follow CFTC compliance — strict definitions, clear resolution sources, US citizens only with KYC. Polymarket operates globally without CFTC oversight — deeper liquidity, but also higher regulatory risk.
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