Highest temperature in Paris on August 5?

Platform comparison

Market context

The relevant real-world event is the temperature reached at Paris-Le Bourget Airport, with settlement tied to the highest reading recorded there on 5 August 2026. Late-summer Paris normally produces afternoon highs in the mid-20s Celsius, and current commercial forecasts for the city cluster around the high-20s to about 30°C rather than anything extreme[1][10][11].

That backdrop matters because this market’s current 0% YES implies the contract is being priced as though the day will finish below the listed threshold range, which is consistent with a standard August profile rather than a heatwave outcome. Comparable French heat episodes have pushed Paris much higher — the city reached 40.9°C during June 2026 and France’s wider heat events have produced 44°C-plus readings elsewhere — so any upside here depends on an exceptional late-summer surge rather than normal seasonal warmth[3][15][17].

The catalyst to watch is the day’s forecast-to-observation gap: traders should focus on whether Météo-France and other short-range forecasts hold dry, sunny conditions with highs near 29–30°C, or whether a hotter air mass develops into the afternoon. A recent Paris forecast from *Sortir à Paris* pointed to dry, sunny weather on 5 August and around 29°C at the high, which supports a moderate-temperature scenario unless updated guidance shifts materially hotter[11].

Sources: 1 · 2 · 3 · 4 · 5

Methodology

This page tracks Highest temperature in Paris on August 5? across four political prediction venues. Live odds come from the Polymarket order book (the deepest political prediction-market book). Kalshi is the CFTC-regulated US alternative, Betfair the established UK sports-exchange with politics markets, Manifold the open play-money variant. For users geo-blocked from Polymarket directly, brokers like Trump Prediction provide a 0%-fee route into the same order book.

Resolution & payout

For political markets the resolution source is decisive. Polymarket defines a concrete source per contract (e.g. AP, Reuters, official electoral commission) and uses the UMA Optimistic Oracle as the on-chain dispute mechanism. With a clearly defined outcome the USDC payout lands within minutes of the final confirmation.

FAQ

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Historically more accurate than polls. Polymarket's Brier score on US 2024 elections was ~0.11 — better than 538 (~0.14) and every mainstream poll. Markets aggregate information with real skin in the game.

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Markets reflect expectations rather than create them. Studies show public-facing markets can anchor expectations, but don't influence the underlying outcome. Political markets are information, not advocacy.

Which platform has the deepest political liquidity?

Polymarket — by far. US 2024 presidential volume was ~$3.5B vs Kalshi (~$200M) and Betfair (~$120M). Where Polymarket is geo-blocked, brokers like Trump Prediction route into the same order book at 0% fees.

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