Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via Trump Prediction) Pick polygram.ink (preferred broker) |
99% | 1% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | Live odds → |
Polymarket (direct) polymarket.com |
99% | 1% | 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 |
|---|---|
| 32°C | 99% |
| 33°C | 1% |
| 27°C or below | 0% |
| 28°C | 0% |
| 29°C | 0% |
| 30°C | 0% |
| 31°C | 0% |
| 34°C | 0% |
| 35°C | 0% |
| 36°C | 0% |
| 37°C or higher | 0% |
Market context
Chongqing’s airport temperature on 4 August is usually read in the context of peak summer heat: August is the city’s hottest month, with long-run averages around 34°C and frequent daytime highs above 40°C in the wider city.[1][15] For the airport specifically, the current setup points to a warm, rain-affected day rather than an exceptional heat spike, with short-range forecasts showing highs around 37°C and patchy rain possible.[3][7]
That makes the market’s 0% crowd-implied YES look more like an outlier view than a straightforward weather call. Historical August data for Chongqing also supports a high-but-not-guaranteed extreme: one climate guide lists 4 August at 34.6°C as the historical high, while broader August averages at the airport sit near 87°F, or about 30.6°C, with humid conditions and regular precipitation.[1][15] In practice, the key reference is the airport station on Wunderground, so a reading in the mid-30s Celsius would fit the monthly pattern even if it falls short of the upper-end city anecdotes.[1][15]
The main catalyst to watch is the day-of forecast evolution into the afternoon local time, because convective showers and cloud cover can cap the peak temperature even when early readings are hot.[3][12] Recent weather reporting for Chongqing also leans on the same theme: humid heat with scattered rain, which tends to make outcomes less about sustained maxima and more about whether the midday heating window stays clear long enough for the airport station to print its high.[1][11]
Methodology
This page tracks Highest temperature in Chongqing on August 4? 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
Political markets typically settle on official candidate or agency confirmation. Polymarket uses UMA Optimistic Oracle: a proposer posts the outcome with a bond, the two-hour window opens, then the smart contract pays USDC.
Kalshi settles USD via CFTC clearinghouse, with clearly defined resolution sources (e.g. AP race calls for elections). Betfair settles after the official outcome is registered with the league or agency. Manifold is play-money.
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.
- 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.
- 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.
Trade Highest temperature in Chongqing on August 4? on Trump Prediction
Live order book, 0% fees, USDC settlement in seconds.
Open live market →