Highest temperature in Paris on July 15?

Platform comparison

Market context

Paris-Le Bourget Airport recorded its highest July temperature of 43°C in 2019, setting the benchmark for extreme heat in the region over the past three decades [1]. Historical data shows daily highs in mid-July typically range between 20°C and 43°C, with the average high sitting at 26°C [1]. The current 0% crowd-implied probability for any specific high-temperature range suggests traders are either awaiting definitive forecast models or betting on a cool day, despite the historical ceiling of 43°C being well within the realm of possibility for this date [1].

Traders should monitor the latest Meteo-France heatwave bulletins and the European Centre for Medium-Weather Forecasting (ECMWF) ensemble projections, which often shift significantly 3–5 days before the event. A scheduled declaration from the French Ministry of Ecology regarding summer heat preparedness, expected this week, could act as a catalyst if it signals an incoming high-pressure system [1]. While no specific campaign-finance disclosures or political debates directly influence temperature, any sudden shift in public infrastructure warnings or emergency heat declarations from Paris city officials would be a key indicator of an approaching thermal spike.

The settlement window closes at 12:00 UTC on 15 July 2026, meaning the market resolves on the single highest temperature recorded at Paris-Le Bourget that day, sourced from Wunderground [1]. Given the 26°C average and the 43°C historical peak, the probability distribution should reflect a wide spread unless a definitive forecast emerges. The market’s current lean on low temperatures contradicts the typical mid-July volatility seen in recent years, where heatwaves have pushed temperatures above 35°C multiple times since 2019 [1].

Sources: 1

Methodology

Political prediction markets differ structurally from sports betting: thinner liquidity, longer settlement windows, higher sensitivity to single news events. This page shows the live Polymarket quote for Highest temperature in Paris on July 15? plus platform attributes for the three reference venues, so you can see at a glance where the deepest market for this question sits.

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

What resolution source is used for elections?

Polymarket defines the source per contract — usually Associated Press (AP Race Call), Reuters or the official electoral commission. The source is stated in contract details before the market opens.

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 Trump Prediction route into the same order book at 0% fees.

Are political prediction markets legal in my country?

It varies. They sit in legal gray areas in most jurisdictions. Polymarket is geo-blocked from US/UK/EU; some broker frontends have a different geo footprint. Trade only with capital you can afford to lose, and only if you understand the legal status in your jurisdiction.

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.