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Highest temperature in Beijing on August 11?

"Highest temperature in Beijing on August 11?" on Polymarket, Kalshi and Is Kalshi Legit — what traders need to know about platform choice, KYC and tax law.

33°C 100% 29°C or below 0% 30°C 0% 31°C 0% Volume: $67K Liquidity: $196K Closes: 11 Aug 2026
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Highest temperature in Beijing on August 11?

Platform comparison

PlatformYES oddsNO oddsFeeKYCSettlement
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.

OutcomeProbability
33°C100%
29°C or below0%
30°C0%
31°C0%
32°C0%
34°C0%
35°C0%
36°C0%
37°C0%
38°C0%
39°C or higher0%

Market context

On 11 August 2026, the highest temperature recorded at Beijing Capital International Airport Station will fall into one of several defined ranges, measured in degrees Celsius and sourced from Weather Underground's Daily Observations table rather than summary figures. Beijing's August climate typically peaks between 28–35°C, though heat waves can push readings above 36°C. The settlement window closes at midday UTC, meaning traders must account for the full calendar day's observations up to that point.

Historical August temperatures at Beijing's airport station show a median high around 31–32°C, with extremes ranging from 25°C in cooler years to 40°C during severe heat events. The 0% crowd probability suggests either extreme confidence in a specific range or insufficient liquidity and trader participation. Comparable weather markets on this venue have resolved accurately when primary data sources (here, the Daily Observations table) remain accessible and unambiguous; discrepancies between summary and detailed readings have occasionally delayed settlement but not altered outcomes materially.

Traders should monitor China Meteorological Administration forecasts and any typhoon activity tracking toward northern China in early August 2026, as tropical systems can suppress temperatures significantly. The market's regulatory accessibility depends on jurisdiction: German traders face GlüStV restrictions on derivative wagering; US participants encounter CFTC oversight of weather derivatives above certain notional thresholds; however, most prediction markets under $1,500 per position operate without formal KYC requirements in permissive jurisdictions, lowering entry friction for this specific contract. Weather Underground's data availability and any station maintenance shutdowns represent the primary operational risk to timely resolution.

Methodology

This overview of Highest temperature in Beijing on August 11? 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.
Is there a withdrawal cap?
No platform-side cap. You can withdraw any amount provided KYC is complete. SEPA bank withdrawals over €15,000 trigger additional anti-money-laundering checks (statutory obligation for all platforms).
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