Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via Is Kalshi Legal in California) Pick polygram.ink (preferred broker) |
100% | 0% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | Go to the live market → |
Polymarket (direct) polymarket.com |
100% | 0% | 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 |
|---|---|
| 36°C | 100% |
| 29°C or below | 0% |
| 30°C | 0% |
| 31°C | 0% |
| 32°C | 0% |
| 33°C | 0% |
| 34°C | 0% |
| 35°C | 0% |
| 37°C | 0% |
| 38°C | 0% |
| 39°C or higher | 0% |
Market context
On 16 August 2026, the highest temperature recorded at Taipei Songshan Airport Station will fall into one of several defined ranges measured in degrees Celsius. The settlement will draw exclusively from the Daily Observations table on Weather Underground rather than summary figures, ensuring precision in a market where marginal differences between data sources can shift outcomes. Taipei's August climate typically sees daily highs between 32–35 °C, though extreme heat events have occasionally pushed readings above 36 °C in recent years.
The current 0% crowd probability suggests either extreme confidence in a specific temperature band or sparse trading activity at present. Historical August temperatures at Songshan provide a baseline: the station has recorded highs exceeding 35 °C on roughly 60–70% of August days over the past decade, with readings above 37 °C occurring in approximately 10–15% of cases. The 2023 and 2024 summers saw several days surpassing 36 °C during mid-August, establishing that such outcomes are neither exceptional nor negligible. Traders should examine the specific range boundaries offered to calibrate expectations against this distribution.
Regulatory accessibility depends on jurisdiction. Under German GlüStV rules, prediction markets on weather events typically fall outside gambling classification if structured as information contracts. US CFTC oversight applies to derivatives on underlying commodities or indices; weather derivatives occupy a grey zone unless explicitly settled against regulated benchmarks. Most platforms offering no-KYC access up to $1,500 USD per account treat weather prediction markets as exempt from enhanced customer identification, though this varies by operator registration and local law. Traders should verify their platform's specific compliance posture before committing capital.
Methodology
This overview of Highest temperature in Taipei on August 16? 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
- 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.
- What happens during a tax audit?
- You're responsible for documenting your trades. Is Kalshi Legal in California exports a full transaction history (CSV/PDF) for tax reporting. In an audit you'll need to present these documents.
- 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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