Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via Is Kalshi Legit) Pick polygram.ink (preferred broker) |
64% | 36% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | See live odds → |
Polymarket (direct) polymarket.com |
64% | 36% | 0% | Geo-blocked in US/UK/EU | USDC, on-chain | See live odds → |
Kalshi kalshi.com |
— | — | Up to 7% per trade | US-only, KYC required | USD | See live odds → |
Betfair Exchange betfair.com |
— | — | 2-5% commission | Full KYC from first trade | GBP / EUR | See live odds → |
Manifold Markets manifold.markets |
— | — | Play-money (mana) | None — play-money | Mana (no cash-out) | See live odds → |
Outcome probabilities
Current market-implied probability for each outcome, from the live order book.
| Outcome | Probability |
|---|---|
| 29°C | 64% |
| 30°C | 23% |
| 31°C | 5% |
| 32°C | 2% |
| 33°C | 1% |
| 27°C or below | 0% |
| 28°C | 0% |
| 34°C | 0% |
| 35°C | 0% |
| 36°C | 0% |
| 37°C or higher | 0% |
Market context
Chengdu’s airport high on 27 July will be set by the day’s maximum at Chengdu Shuangliu International Airport Station, so the market is really a call on whether the local summer heat briefly pushes above the low- to mid-30s Celsius or stays nearer forecast norms. Recent generic Chengdu forecasts point to a warm, humid pattern rather than an extreme heat spike, with July highs commonly around 30°C and the day-to-day range often sitting in the mid-20s to mid-30s, while BBC Weather was showing 24°C at the time of capture and a fairly modest wind profile[1][2][3].
The 0% YES price is also easier to read in light of settlement mechanics and access rules. Because the contract resolves from a specific airport station and a single-day high on Wunderground, late swings usually come from updated local forecasts, cloud cover, rainfall timing, and any short-lived heat bursts rather than broader Chengdu averages[3]. On the regulatory side, a market on weather is not the same as a simple casino-style bet: German GlüStV rules can affect whether a user may access or use such products from Germany, while US CFTC jurisdiction can matter if the venue is deemed to be offering a derivatives-style contract to US persons. If the platform advertises “no-KYC up to $1,500”, that typically means smaller balances can be used with lighter identity checks, which may make entry simpler, but it does not remove geo-restrictions, sanctions screening, or local legal limits on access.
Methodology
This overview of Highest temperature in Chengdu on July 27? 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
- Do I need to KYC for Is Kalshi Legit?
- 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.
- Can I trade anonymously?
- Pseudonymously, yes — up to the KYC threshold. Is Kalshi Legit 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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