Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via Is Kalshi Legal in California) Pick polygram.ink (preferred broker) |
86% | 14% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | Go to the live market → |
Polymarket (direct) polymarket.com |
86% | 14% | 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 |
|---|---|
| 29°C | 86% |
| 30°C | 12% |
| 31°C | 2% |
| 25°C or below | 0% |
| 26°C | 0% |
| 27°C | 0% |
| 28°C | 0% |
| 32°C | 0% |
| 33°C | 0% |
| 34°C | 0% |
| 35°C or higher | 0% |
Market context
The event is the highest temperature recorded at Chengdu Shuangliu International Airport Station on 6 August 2026, measured in Celsius and resolved from Wunderground’s daily history page. For market access, the practical issue is whether a user can place or hedge a position under the platform’s identity checks: “no-KYC up to $1,500” means smaller activity may remain available without full identity verification, but it does not remove jurisdictional restrictions or change how the contract settles.
The current 0% crowd-implied probability is hard to reconcile with Chengdu’s August climate, which is usually hot, humid, and often around the low 30s Celsius by day. Seasonal guides put August highs near 30–32°C, while recent forecast products have pointed to maxima in the low 30s or higher for early August, which means the market is not pricing an extreme outcome so much as an event that still depends on the day’s observed airport reading and the exact Wunderground station data. Comparable weather contracts are usually read against local climatology first, then adjusted for any short-lived rain or cloud cover that caps the daytime peak.
From a regulation and tax perspective, the relevant frame is that German GlüStV rules can affect whether a user may lawfully participate in certain online gaming-style products from Germany, while US CFTC reach matters because prediction markets can trigger derivatives-style scrutiny if they are available to US persons or routed through US-facing infrastructure. For traders, the main catalysts are the hourly evolution of local heat, cloud, rain and wind, plus any revisions in airport-observed conditions reflected in Wunderground before settlement; current forecast products for Chengdu show unstable summer weather with showers and high humidity, which can trim the daily maximum even when the background air mass is hot.
Methodology
This overview of Highest temperature in Chengdu on August 6? 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.
- Do I need to KYC for Is Kalshi Legal in California?
- 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.
- 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.
- 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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