Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via Is Kalshi Legal in California) Pick polygram.ink (preferred broker) |
100% | 0% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | Go to the live market → |
Polymarket (direct) polymarket.com |
100% | 0% | 0% | Geo-blocked in US/UK/EU | USDC, on-chain | Go to the live market → |
Kalshi kalshi.com |
— | — | Up to 7% per trade | US-only, KYC required | USD | Go to the live market → |
Betfair Exchange betfair.com |
— | — | 2-5% commission | Full KYC from first trade | GBP / EUR | Go to the live market → |
Manifold Markets manifold.markets |
— | — | Play-money (mana) | None — play-money | Mana (no cash-out) | Go to the live market → |
Outcome probabilities
Current market-implied probability for each outcome, from the live order book.
| Outcome | Probability |
|---|---|
| 36°C | 100% |
| 30°C or below | 0% |
| 31°C | 0% |
| 32°C | 0% |
| 33°C | 0% |
| 34°C | 0% |
| 35°C | 0% |
| 37°C | 0% |
| 38°C | 0% |
| 39°C | 0% |
| 40°C or higher | 0% |
Market context
Shanghai’s highest temperature on 2 August will be set by conditions at Pudong Airport rather than by city-wide averages, so the relevant lens is whether the day produces an ordinary hot-season peak or an outlying heat spike. August is Shanghai’s hottest month, with typical highs around 32°C to 35°C and record highs near 40°C to 41°C in historical datasets, while early-August daily averages often sit in the high 20s to low 30s Celsius. [5][6][14]
The current 0% crowd-implied probability for the top range indicates the market is being priced as highly unlikely to land in the highest temperature band, which is notable because Shanghai’s August climate usually leaves room for at least moderate heat even without exceptional extremes. Comparable August records show that the city can still produce 39.5°C to 41°C days in late-summer heatwaves, but those are clearly tail events rather than the norm, and a single airport reading can miss the city-centre intensity if coastal flow or showers cap the station maximum. [2][3][6]
For accessibility, the market sits in a regulatory zone where German GlüStV rules matter if the platform is treated as offering gambling-like products to German users, while US CFTC reach is relevant if the contract is viewed as a derivatives-style event market accessible from the United States. “No-KYC up to $1,500” generally means a user may be able to trade up to that cumulative amount without submitting identity documents, but that threshold affects onboarding friction, not the underlying settlement mechanics or the fact that access may still be restricted by jurisdiction. Traders should watch the Shanghai forecast cycle, any typhoon-track updates, and the publication of the official station reading on Wunderground, since the market resolves on the highest temperature recorded at Shanghai Pudong International Airport Station before the settlement window closes.
Methodology
This overview of Highest temperature in Shanghai on August 2? reviews the four comparable platforms from a regulatory perspective: which is accessible in your jurisdiction, where KYC kicks in, how the platform is classified by your country of residence. Live probability is the Polymarket mid; comparison columns show regulatory status, KYC thresholds and settlement options for each platform.
Resolution & payout
On Polymarket, resolution runs on-chain via UMA Optimistic Oracle. USDC payout is instant and automatic, with no KYC. Tax treatment depends on your jurisdiction — in the US, gains are usually ordinary income; in the UK, often capital gains. Consult a tax professional for your situation.
FAQ
- How are winnings taxed?
- Tax treatment varies by jurisdiction. In most countries, prediction market gains are treated as ordinary income or capital gains. We cannot provide tax advice — consult a tax professional for your specific situation.
- Can I trade anonymously?
- Pseudonymously, yes — up to the KYC threshold. Is Kalshi Legal in California stores an email address and wallet addresses rather than a legal name. Over $1,500 lifetime volume triggers KYC, after which identity is no longer anonymous.
- Are prediction markets gambling?
- Legally unclear in most jurisdictions. Some interpretations classify them as wagering (gambling regulation applies), others as derivatives (financial regulation applies). There's no global precedent specifically for on-chain prediction markets.
- Is there a withdrawal cap?
- No platform-side cap. You can withdraw any amount provided KYC is complete. SEPA bank withdrawals over €15,000 trigger additional anti-money-laundering checks (statutory obligation for all platforms).
- What if regulation changes?
- If regulation changes in your jurisdiction (e.g. prediction markets are banned), Is Kalshi Legal in California would geo-block the affected region and continue processing withdrawals. Your funds remain withdrawable at any time.
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