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 |
|---|---|
| 39°C | 100% |
| 35°C or below | 0% |
| 36°C | 0% |
| 37°C | 0% |
| 38°C | 0% |
| 40°C | 0% |
| 41°C | 0% |
| 42°C | 0% |
| 43°C | 0% |
| 44°C | 0% |
| 45°C or higher | 0% |
Market context
The event is whether the *highest* temperature at Chengdu Shuangliu International Airport Station lands in the settlement band for 24 July 2026, using Wunderground’s daily history page as the reference source. With the crowd pricing **0% YES**, the market is implying that the target temperature range is currently viewed as extremely unlikely, but the real outcome will still depend on the station’s recorded daily maximum rather than headline city forecasts.
For context, Chengdu’s July climate is typically hot, humid and prone to rain, with current public forecasts and travel weather pages pointing to highs in the mid-to-high 30s Celsius and intermittent showers. BBC Weather shows Chengdu at 24°C with humidity at 74%, while Weather25’s short-range material points to a 36°C to 24°C range and a separate current reading of 38°C, suggesting that a low-probability market price may be more about settlement precision than about the existence of heat itself.[1][2][3] That is the key read-through for a weather market: the exact band matters more than whether the day feels broadly hot.
From a trading-access angle, this sits in the usual prediction-market grey zone. German GlüStV risk turns on whether the activity is treated as gambling locally, which can affect access and compliance expectations for German users; US CFTC reach is relevant where a contract is seen as a derivatives-style event market; and “no-KYC up to $1,500” generally means smaller accounts may be able to participate without identity checks until cumulative limits are hit, which can make entry easier but does not remove jurisdictional restrictions. For a weather contract like this, the practical catalysts are the midday-to-afternoon warming pattern at the airport station, any late-morning cloud or rain, and whether the day’s maximum is reached before the settlement window closes.
Methodology
This overview of Highest temperature in Chengdu on July 24? 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.
- 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. 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.
- 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).
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