Highest temperature in Paris on August 19?

Platform comparison

Market context

On 19 August 2026, the highest temperature recorded at Paris-Le Bourget Airport will determine the settlement of this market. Resolution depends on the Daily Observations table from Weather Underground rather than the summary Day High & Low section—a distinction that matters when intraday readings diverge from headline figures. The settlement window closes at midday UTC on that date, meaning trades must account for the fact that afternoon temperatures may still be rising when the market locks.

Historical August temperatures at Le Bourget show a median daily high around 25–26 °C, with extremes ranging from 18 °C to 38 °C over the past three decades. The 0% crowd probability suggests traders are pricing in either a deliberately conservative range or uncertainty about the exact threshold bands. August heat waves in the Île-de-France region have become more frequent; the 2022 summer saw multiple days exceeding 35 °C, whilst cooler Augusts have produced highs in the low 20s. Comparable airport-station markets typically see probability mass shift sharply once seasonal forecasts firm up in early August.

Traders should monitor Météo-France's extended outlook releases in late July and early August, which typically refine 10–15 day forecasts with greater precision. Atlantic weather patterns—particularly the position of high-pressure systems over western Europe—drive Paris summer temperatures more than any single catalyst. The UK Met Office and European Centre for Medium-Range Weather Forecasts (ECMWF) publish updated ensemble runs every 12 hours; significant shifts in those models often precede crowd probability movements by 24–48 hours.

Methodology

This overview of Highest temperature in Paris on August 19? 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

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.

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.

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).