Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via Is Kalshi Legit) Pick polygram.ink (preferred broker) |
94% | 6% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | See live odds → |
Polymarket (direct) polymarket.com |
94% | 6% | 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 |
|---|---|
| 24°C | 94% |
| 25°C | 5% |
| 26°C | 1% |
| 23°C or below | 0% |
| 27°C | 0% |
| 28°C | 0% |
| 29°C | 0% |
| 30°C | 0% |
| 31°C | 0% |
| 32°C | 0% |
| 33°C or higher | 0% |
Market context
The practical event is the **highest temperature at Chongqing Jiangbei International Airport** during the observation window on 3 August, with the result coming from the station’s recorded daily maximum rather than from citywide averages. August is normally Chongqing’s hottest month, with typical highs around **34°C** and published August averages clustered in the low-to-mid 30s Celsius, so the market is really about whether the day finishes near seasonal norms or pushes into a stronger heat spike.[2][4][8][14]
A **0% YES** price is unusually low for a mid-summer Chongqing temperature contract, given that historical and climate references consistently place August as the warmest period and cite occasional extremes well above 40°C during heatwaves.[4][8][12] For comparison, travel and climate sources point to August highs around 34°C, while historical records show much higher outliers in severe events, which means the market may be discounting either a specific settlement wording issue, late-day timing, or the possibility that traders are unsure how the airport station’s reading will compare with broader city forecasts.[2][4][18]
From a trading-access perspective, the key regulatory frame is that **German GlüStV** treatment can restrict participation in products classed as gambling, while the **US CFTC** has asserted broad reach over event-contract activity where it has jurisdiction, so location matters for access as much as the weather itself. The platform’s “**no-KYC up to $1,500**” claim means smaller positions may be possible without full identity verification, but that does not override local onboarding, compliance, or geoblocking rules; for this market, the main catalysts are the day’s actual airport observations and any forecast updates close to the settlement cut-off, not a corporate announcement or earnings-style schedule.[1][3][13]
Methodology
This overview of Highest temperature in Chongqing on August 3? 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 Legit has a different geo footprint.
- 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.
- 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.
- What if regulation changes?
- If regulation changes in your jurisdiction (e.g. prediction markets are banned), Is Kalshi Legit would geo-block the affected region and continue processing withdrawals. Your funds remain withdrawable at any time.
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