Highest temperature in Paris on August 15?

Platform comparison

Market context

On 15 August 2026, the highest temperature recorded at Paris-Le Bourget Airport will be measured and reported via Weather Underground's Daily Observations table, which serves as the authoritative resolution source for this market. The settlement window closes at midday UTC on that date, locking in the final reading before any subsequent temperature fluctuations occur later in the afternoon or evening.

Historical August temperatures at Le Bourget show considerable year-to-year variation, with daily highs typically ranging between 22 and 28 degrees Celsius, though extremes have occasionally exceeded 30 degrees during heat waves. The current crowd-implied probability of 0% YES reflects either an absence of trading activity or consensus that the market's resolution criteria—specifically the Daily Observations table rather than the Day High & Low summary—creates sufficient ambiguity to deter participation. Comparable weather markets on prediction platforms have demonstrated that temperature-specific outcomes with narrow bands attract minimal liquidity when the underlying event remains distant and meteorological forecasting carries inherent uncertainty.

From a regulatory standpoint, this market's accessibility depends on jurisdiction. Under Germany's GlüStV framework, prediction markets on weather events may require licensing if offered to German residents. US CFTC oversight applies to derivatives-like instruments, though weather prediction markets occupy a grey area depending on contract structure and participant location. The no-KYC threshold up to $1,500 USD—common across decentralised prediction platforms—means traders in most jurisdictions can participate without identity verification below that stake level, though this market's low liquidity may constrain position sizing regardless of regulatory allowances.

Methodology

This overview of Highest temperature in Paris on August 15? 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.

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.

Are prediction markets gambling?

Legally unclear in most jurisdictions. Some interpretations classify them as wagering (gambling regulation applies), others as derivatives (financial regulation applies). There's no global precedent specifically for on-chain prediction markets.

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.