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 |
|---|---|
| 82-83°F | 100% |
| 77°F or below | 0% |
| 78-79°F | 0% |
| 80-81°F | 0% |
| 84-85°F | 0% |
| 86-87°F | 0% |
| 88-89°F | 0% |
| 90-91°F | 0% |
| 92-93°F | 0% |
| 94-95°F | 0% |
| 96°F or higher | 0% |
Market context
New York City’s peak temperature on 26 July will be set by the highest reading at LaGuardia Airport Station, so the real-world driver is whether the city gets a genuinely hot afternoon rather than just a warm morning. Under the market rules, the settlement outcome is tied to the daily high recorded on Wunderground for KLGA, not to any forecast or the temperature at a different official site.[1]
The current 0% implied probability for “YES” sits well below what comparable summer highs in the city often imply, especially when markets are already clustering around the low-to-mid 80s Fahrenheit. A live market snapshot on the same event shows the leading outcomes centred on 84–85°F and 82–83°F, which suggests traders are pricing a moderate summer day rather than an extreme spike.[1] For context, NYC heat-risk coverage notes that the hottest part of the day is usually from about 11am to 4pm, which is the window most likely to determine the day’s final high if cloud cover, sea breeze, or thunderstorm outflow fail to cap temperatures earlier.[2]
For accessibility, the legal frame matters as much as the weather. Markets offered by major crypto prediction platforms are often marketed as no-KYC up to a small withdrawal threshold, commonly around $1,500, meaning a user may be able to participate without full identity checks until activity or cash-out levels trigger verification; that improves access, but it can still narrow practical use for larger positions. In Germany, the GlüStV framework can make unauthorised online wagering problematic, while US CFTC jurisdiction remains relevant where a contract is treated as a derivatives-style event market, so availability may depend on the user’s location and the platform’s compliance perimeter rather than the weather data itself.
Methodology
This overview of Highest temperature in NYC on July 26? 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.
- 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.
- 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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