Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via Is Kalshi Legal in California) Pick polygram.ink (preferred broker) |
97% | 3% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | Go to the live market → |
Polymarket (direct) polymarket.com |
97% | 3% | 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 |
|---|---|
| 37°C | 97% |
| 38°C | 1% |
| 34°C or below | 0% |
| 35°C | 0% |
| 36°C | 0% |
| 39°C | 0% |
| 40°C | 0% |
| 41°C | 0% |
| 42°C | 0% |
| 43°C | 0% |
| 44°C or higher | 0% |
Market context
The event is the **highest temperature recorded at Chengdu Shuangliu International Airport on 23 July 2026**, using the daily Wunderground history page as the settlement source. A **0% YES** crowd-implied probability suggests the market is currently pricing in an outcome outside the relevant temperature band, or simply treating the contract as too early or too thin to assign meaningful weight.
For comparison, Chengdu’s late-July temperatures are usually shaped by the East Asian summer monsoon and subtropical heat, which can produce warm but not always extreme daily maxima; that makes the market read more like a weather-range contract than a binary event. In regulatory terms, the framing matters: under Germany’s GlüStV regime, prediction-market style products can face gambling classification issues if offered to German users, while the US CFTC may assert reach where a contract is treated as a commodity derivative rather than a pure game of chance. “No-KYC up to $1,500” typically means a user can access the market and trade only until cumulative identity-check thresholds are reached, after which stronger verification is required; for this specific market, that would affect ease of entry more than the weather outcome itself.
Traders should watch the airport station’s live reporting cadence, local weather advisories, and any forecast shifts tied to heat, cloud cover, or rainfall before the settlement window closes. The key dependency is not a formal announcement but the actual maximum printed by the source station, so late-day showers, stronger solar heating, or a change in observed station conditions can move the final reading. In practice, the most relevant catalyst is the hourly evolution of Chengdu’s local forecast versus the station’s observed temperatures, since settlement depends on the single daily high rather than an average.
Methodology
This overview of Highest temperature in Chengdu on July 23? 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. Is Kalshi Legal in California has a different geo footprint.
- 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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