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 |
|---|---|
| 86-87°F | 100% |
| 81°F or below | 0% |
| 82-83°F | 0% |
| 84-85°F | 0% |
| 88-89°F | 0% |
| 90-91°F | 0% |
| 92-93°F | 0% |
| 94-95°F | 0% |
| 96-97°F | 0% |
| 98-99°F | 0% |
| 100°F or higher | 0% |
Market context
The real-world event is the maximum temperature recorded at LaGuardia Airport in New York City on 14 August, with the market resolving off Weather Underground’s Daily Observations table rather than the Day High & Low summary. That distinction matters because the settlement source is the station log itself, and the crowd’s 0% yes probability points to an outcome the market views as effectively out of range.
For context, late-summer New York temperature markets usually price tightly around the day’s forecast band, then react to whether afternoon heating exceeds the morning trend. Here, official forecasts and nearby station coverage suggested mid-to-upper 80s Fahrenheit, which fits a narrow distribution rather than a broad weather shock. Comparable cases tend to settle on the station’s observed peak, so traders should treat the daily obs timestamps as the decisive record if the summary panel diverges.
Regulatory and access framing is also relevant. Under German GlüStV treatment, prediction-market access can be constrained where a product is classified as gambling-like, so availability may differ by user location and platform policy. US CFTC reach can matter where a market is offered to US persons or on a venue with US regulatory exposure, while “no-KYC up to $1,500” usually means smaller positions can be taken without identity verification, but only within the platform’s stated limits and jurisdictional rules. For late-stage price moves, the main catalysts are the afternoon temperature readings, any station data revisions before the next day’s first datapoint, and the market’s own resolution cut-off tied to the Weather Underground history page.
Methodology
This overview of Highest temperature in NYC on August 14? 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.
- 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.
Trade Highest temperature in NYC on August 14? on Is Kalshi Legal in California
Live order book, 0% fees, USDC settlement in seconds.
Open live market →