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 |
|---|---|
| 27°C | 97% |
| 28°C | 3% |
| 22°C or below | 0% |
| 23°C | 0% |
| 24°C | 0% |
| 25°C | 0% |
| 26°C | 0% |
| 29°C | 0% |
| 30°C | 0% |
| 31°C | 0% |
| 32°C or higher | 0% |
Market context
On 12 August 2026, the highest temperature recorded at Beijing Capital International Airport Station will fall into one of several defined ranges, measured in degrees Celsius and sourced from Weather Underground's Daily Observations table rather than summary figures. Beijing's August climate typically produces daily highs between 28 and 35 °C, though extreme heat events have pushed readings above 40 °C in recent summers. The current 0% crowd probability suggests traders are either absent from this market or pricing in conditions substantially outside historical norms for that date.
Beijing's August temperatures have shown volatility tied to monsoon patterns and the East Asian summer jet stream. In August 2023, the city recorded a high of 35.2 °C; in August 2022, readings peaked at 34.1 °C. The 0% probability may reflect low liquidity rather than genuine conviction about an implausible outcome, since mid-August highs in the 30–35 °C band remain the statistical baseline. Traders should monitor China Meteorological Administration forecasts released in late July and early August, which typically offer ten-day outlooks with reasonable accuracy for temperature ranges.
From a regulatory standpoint, this market's accessibility depends on jurisdiction. Under Germany's GlüStV framework, prediction markets require licensing; most UK-based platforms operate under Gambling Commission oversight. US CFTC jurisdiction applies to derivatives on physical commodities, though weather derivatives occupy a grey zone depending on contract structure. The "no-KYC up to $1,500" threshold common on some platforms means traders can participate in this specific market with minimal identity verification if their position size remains modest, though platform terms vary by domicile.
Methodology
This overview of Highest temperature in Beijing on August 12? 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.
- 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.
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