Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via Is Kalshi Legit) Pick polygram.ink (preferred broker) |
100% | 0% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | See live odds → |
Polymarket (direct) polymarket.com |
100% | 0% | 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 |
|---|---|
| 11°C | 100% |
| 5°C or below | 0% |
| 6°C | 0% |
| 7°C | 0% |
| 8°C | 0% |
| 9°C | 0% |
| 10°C | 0% |
| 12°C | 0% |
| 13°C | 0% |
| 14°C | 0% |
| 15°C or higher | 0% |
Market context
The real-world event is the highest temperature recorded at Wellington International Airport on 27 July 2026, with settlement based on the Wunderground daily history page for the Wellington Intl Airport Station. In mid-winter Wellington typically posts highs around 12°C, with frequent rain and brisk winds, so the distribution of outcomes is usually concentrated in the low teens rather than the high teens or above.[1][3]
A current crowd-implied probability of 0% YES suggests the market is not pricing in a meaningful chance of an unusually warm reading, which is consistent with the seasonal baseline rather than with a hard forecast of the actual airport maximum. Comparable July climate data show a fairly narrow band, with recent July daytime highs around 12.7°C on average and occasional spikes into the mid-teens, such as 15.7°C in July 2023, which gives a rough sense of the upper tail even though that is not directly predictive for this date.[1][3] For German users, GlüStV restrictions can affect whether the market is accessible at all through locally restricted platforms, while US traders should note that CFTC reach can apply where a venue is deemed to be offering derivatives-style event contracts in the United States; those are market-access questions rather than forecasts about the weather itself.
For trading context, the main catalysts are the airport’s observed afternoon maximum, any late-day temperature spike from shifting wind or sun, and the possibility of a revised reading if the data feed updates after the fact. Because the market resolves from a specific historical record page rather than a forecast, the key dependency is the published Wunderground station data, not announcements or schedule changes. Where a venue offers no-KYC up to $1,500, that usually means smaller positions may be opened without full identity verification, but access can still vary by jurisdiction and by the platform’s own geoblocking or compliance rules.
Methodology
This overview of Highest temperature in Wellington 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.
- What happens during a tax audit?
- You're responsible for documenting your trades. Is Kalshi Legit exports a full transaction history (CSV/PDF) for tax reporting. In an audit you'll need to present these documents.
- 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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