Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via Trump Prediction) Pick polygram.ink (preferred broker) |
45% | 55% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | Live odds → |
Polymarket (direct) polymarket.com |
45% | 55% | 0% | Geo-blocked in US/UK/EU | USDC, on-chain | Live odds → |
Kalshi kalshi.com |
— | — | Up to 7% per trade | US-only, KYC required | USD | Live odds → |
Betfair Exchange betfair.com |
— | — | 2-5% commission | Full KYC from first trade | GBP / EUR | Live odds → |
Manifold Markets manifold.markets |
— | — | Play-money (mana) | None — play-money | Mana (no cash-out) | Live odds → |
Outcome probabilities
Current market-implied probability for each outcome, from the live order book.
| Outcome | Probability |
|---|---|
| 35°C | 45% |
| 36°C | 32% |
| 34°C | 12% |
| 37°C | 4% |
| 38°C | 1% |
| 39°C or higher | 1% |
| 29°C or below | 0% |
| 30°C | 0% |
| 31°C | 0% |
| 32°C | 0% |
| 33°C | 0% |
Market context
Shenzhen's weather on 25 July 2026 will be measured against historical temperature records from Bao'an International Airport, the city's primary meteorological observation point. July falls within Shenzhen's hottest season, when subtropical monsoon conditions and urban heat effects combine to produce consistently elevated temperatures. The settlement mechanism relies on Wunderground's historical weather database, which aggregates data from the airport station throughout the day, with resolution occurring at midday on 25 July 2026.
Shenzhen's July temperatures have historically ranged between 26°C and 35°C, with daily highs typically clustering in the 32–34°C band during mid-to-late July. The 0% crowd probability suggests traders are either uncertain about the specific temperature thresholds offered or expect conditions to fall outside the highest-temperature brackets. Comparable years show variability driven by typhoon activity and timing of the East Asian summer monsoon; tropical systems approaching the South China coast can suppress temperatures, whilst high-pressure systems intensify heat.
Traders should monitor seasonal weather patterns and any typhoon forecasts issued in early July 2026, as these represent the primary catalyst for temperature deviation from the 30-year climatological mean. The China Meteorological Administration and regional forecasts issued in the week preceding 25 July will provide the most actionable signals. Bao'an Airport's location near the coast introduces maritime influence that can moderate extremes compared to inland urban areas, a factor worth weighing against the raw historical record.
Methodology
This page tracks Highest temperature in Shenzhen on July 25? 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 Trump Prediction 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.
- Can prediction markets influence election outcomes?
- Markets reflect expectations rather than create them. Studies show public-facing markets can anchor expectations, but don't influence the underlying outcome. Political markets are information, not advocacy.
- 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 Trump Prediction 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.
- Which political events have the biggest volume?
- US Presidential election, party nominations (DNC/RNC), Senate majorities, individual state outcomes (Pennsylvania, Michigan, Wisconsin), and major European elections. Peak markets reach $50-500M per event.
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