Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via Polymarket Tax UK) Pick polygram.ink (preferred broker) |
99% | 1% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | Trade this market → |
Polymarket (direct) polymarket.com |
99% | 1% | 0% | Geo-blocked in US/UK/EU | USDC, on-chain | Trade this market → |
Kalshi kalshi.com |
— | — | Up to 7% per trade | US-only, KYC required | USD | Trade this market → |
Betfair Exchange betfair.com |
— | — | 2-5% commission | Full KYC from first trade | GBP / EUR | Trade this market → |
Manifold Markets manifold.markets |
— | — | Play-money (mana) | None — play-money | Mana (no cash-out) | Trade this market → |
Outcome probabilities
Current market-implied probability for each outcome, from the live order book.
| Outcome | Probability |
|---|---|
| 28°C | 99% |
| 29°C | 1% |
| 20°C or below | 0% |
| 21°C | 0% |
| 26°C | 0% |
| 27°C | 0% |
| 22°C | 0% |
| 23°C | 0% |
| 24°C | 0% |
| 25°C | 0% |
| 30°C or higher | 0% |
Market context
The real-world event driving this market is the peak daytime temperature recorded at Chongqing Jiangbei International Airport on 2 July 2026, a date historically synonymous with extreme heat in one of China’s “Four Furnaces”. Chongqing’s July and August averages sit near 33°C, with daytime highs frequently reaching 43°C under high humidity and urban heat island effects[1][4]. Current crowd-implied probability of 0% YES suggests traders believe the temperature will fall outside the specific range being bet on, likely because historical data points to values well above 26°C, which is the range with the highest implied probability among traders[2].
Traders should monitor daily weather bulletins from the China Meteorological Administration and Wunderground updates for the ZUCK station, as sudden shifts in cloud cover or monsoon activity could alter peak temperatures[3]. Recent climate records show Chongqing hitting 30°C or higher with 41% probability on 1 July, a figure many analysts consider low given the city’s typical summer intensity[5]. Key dependencies include the timing of the settlement window ending 12:00 UTC on 2 July and the reliability of Wunderground’s real-time data feed, which is the official resolution source.
From a regulatory standpoint, this market’s accessibility hinges on jurisdiction-specific rules: German GlüStV implications may restrict participation for residents in Germany, while US CFTC reach could affect traders in the United States depending on market classification. The “no-KYC up to $1,500” feature allows traders in many jurisdictions to participate without identity verification, provided they stay under the threshold, though this does not override local tax or licensing obligations. These factors shape who can access the market and under what conditions, without altering the underlying weather outcome.
Methodology
This overview of Highest temperature in Chongqing on July 2? 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. Polymarket Tax UK has a different geo footprint.
- 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. Polymarket Tax UK 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. Polymarket Tax UK 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), Polymarket Tax UK would geo-block the affected region and continue processing withdrawals. Your funds remain withdrawable at any time.
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