Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via Polymarket Legal UK) Pick polygram.ink (preferred broker) |
100% | 0% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | Trade this market → |
Polymarket (direct) polymarket.com |
100% | 0% | 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 |
|---|---|
| 27°C | 100% |
| 22°C or below | 0% |
| 23°C | 0% |
| 24°C | 0% |
| 25°C | 0% |
| 26°C | 0% |
| 28°C | 0% |
| 29°C | 0% |
| 30°C | 0% |
| 31°C | 0% |
| 32°C or higher | 0% |
Market context
The event is the **highest temperature** recorded at Chengdu Shuangliu International Airport Station on 1 August 2026, as measured by Wunderground’s daily history page. August is typically Chengdu’s hottest stretch, with average highs around 29–30°C and day-time peaks often in the low 30s Celsius, so a single hot afternoon can still set the day’s maximum even if rain or haze builds later.[1][2][11]
The current **0% YES** crowd price implies the market is pricing in a temperature outcome outside the Yes range, but historical August data argues for caution: Chengdu’s August highs often sit near 30–33°C, and published climate references show occasional extremes into the mid-30s Celsius, with record highs well above 35°C in some years.[3][4][17][18] For comparison, 1 August is described as the hottest day of the year on some climate datasets, which makes the market especially sensitive to whether the airport station catches a brief early-afternoon spike.[1][2]
From a trading-access angle, the main regulatory frame is that prediction markets can sit uneasily across jurisdictions: German **GlüStV** rules may treat paid speculative betting products as gambling-related activity, while US **CFTC** oversight can reach derivative-style event contracts offered to US persons even when the venue is offshore. “**No-KYC up to $1,500**” means a participant may be able to access the market without identity verification until cumulative activity reaches that threshold, which improves frictionless access but does not change the legal classification of the product or the user’s local obligations. The practical catalysts are the day’s actual weather evolution at Chengdu, especially the timing of sunshine, showers and convective cloud cover, rather than any scheduled announcement.[7][12]
Methodology
This overview of Highest temperature in Chengdu on August 1? 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
- Is Polymarket legal in my country?
- Polymarket is geo-blocked in the US/UK/EU. Actual usage via the Polymarket interface is not possible there. The legal status itself varies — many countries treat prediction markets as a gray area. Polymarket Legal UK has a different geo footprint.
- Do I need to KYC for Polymarket Legal UK?
- Not for lifetime trading volume under $1,500. Above that threshold, a quick KYC flow kicks in — ID, selfie, approximately 5-10 minutes. The threshold matches FATF travel standards for unregulated crypto platforms.
- Can I trade anonymously?
- Pseudonymously, yes — up to the KYC threshold. Polymarket Legal UK 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.
- What happens during a tax audit?
- You're responsible for documenting your trades. Polymarket Legal UK exports a full transaction history (CSV/PDF) for tax reporting. In an audit you'll need to present these documents.
- 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).
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