Highest temperature in Paris on July 16?

Platform comparison

Market context

Paris will experience its peak daytime heat on 16 July 2026 at the Paris-Le Bourget Airport Station, with the market currently pricing the outcome as impossible despite the date being today. The crowd-implied probability of 0% for any specific range appears to stem from a data lag or a misalignment in the settlement mechanism, as live conditions are already unfolding rather than remaining speculative.

Historical patterns suggest such a zero-probability stance is statistically anomalous for mid-July in Paris, where temperatures routinely exceed 30°C. During the 2024 Olympics, average temperatures in the city warmed by 5.5°F compared to the 1924 Games, indicating a clear upward trend in summer heat that makes extreme lows increasingly rare [3]. Current Polymarket data contradicts the 0% figure, showing "33°C" as the frontrunner at 53% and "32°C" at 38%, suggesting the market is actively pricing in a hot day rather than dismissing the event entirely [1].

Traders should monitor the real-time Wunderground feed for the Paris-Le Bourget station, which serves as the definitive resolution source for this contract. The primary catalyst is the immediate arrival of the daily maximum temperature reading, which will settle the market before the 12:00 UTC deadline. Any delay in the data feed from Wunderground could temporarily sustain the current pricing discrepancy, but the physical reality of the day's heat will override the crowd-implied probability once the official record is published [1].

Sources: 1 · 2 · 3

Methodology

This page tracks Highest temperature in Paris on July 16? 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 Election Predictions UK 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

Can prediction markets influence election outcomes?

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 Election Predictions UK route into the same order book at 0% fees.

How fast do political markets react to news?

High-liquidity markets move within seconds to minutes. A Trump tweet on the economy can shift the "Trump 2024" market 2-5 points before mainstream media has written anything.

Why do Polymarket and Kalshi differ on elections?

Kalshi must follow CFTC compliance — strict definitions, clear resolution sources, US citizens only with KYC. Polymarket operates globally without CFTC oversight — deeper liquidity, but also higher regulatory risk.

Which political events have the biggest volume?

US Presidential election, party nominations (DNC/RNC), Senate majorities, individual state outcomes (Pennsylvania, Michigan, Wisconsin), and major European elections. Peak markets reach $50-500M per event.