Highest temperature in Paris on July 5?

Platform comparison

Market context

The underlying event is the daily maximum temperature recorded at Paris-Le Bourget Airport on 5 July 2026, which will determine whether the market settles on a specific threshold. Historical data shows Paris July highs typically range from 20°C to 43°C, with the average daily high sitting at 26°C and the record peak reaching 43°C in 2019 during a severe heatwave[2][3]. Recent European heatwaves have pushed national thermal indicators to 29.8°C, with localized peaks exceeding 35°C in southern regions, suggesting that while 30°C is plausible, the current 0% YES probability implies the market expects a deviation from this specific discrete outcome[6][7].

A power-user evaluating this market programmatically would monitor Météo-France and ECMWF updates for the next 48 hours, as these forecasts dictate the modal peak temperature range[1]. Traders should watch for red heatwave alerts issued by the national meteorological service, which have recently covered 54 departments and signal persistent high temperatures around the clock[7]. The settlement depends entirely on the Wunderground daily maximum for Paris-Le Bourget, meaning any forecast shift toward 29°C or 31°C would immediately invalidate the 30°C outcome, reflecting the thin volume and high sensitivity to the next forecast update[1][8].

Sources: 1 · 2 · 3 · 4 · 5

Methodology

This page reviews Highest temperature in Paris on July 5? across five venues. The live probability is the Polymarket mid-price, sourced directly from the on-chain Polygon order book; the comparison columns benchmark each venue on fee structure, KYC, settlement currency and payment rails. Every CTA routes to Polymarket Review UK, which mirrors the Polymarket order book at 0% fees.

Resolution & payout

Polymarket-based markets settle through the UMA Optimistic Oracle on Polygon. A proposer submits the outcome, a two-hour challenge window opens, and unchallenged proposals finalise the resolution. Payouts settle automatically in USDC the moment the result is final — no bookmaker, no delay.

Kalshi-based markets settle in USD via the CFTC-regulated clearinghouse. Betfair Exchange settles in GBP/EUR net of commission. Manifold is play-money and does not pay out real funds.

FAQ

Where can I trade this market with the lowest fees?

Polymarket is geo-blocked in the US/UK/EU. The easiest 0%-fee broker into the same order book is Polymarket Review UK. Kalshi charges up to 7% per trade; Betfair Exchange takes 2-5% commission on net winnings.

Is this market available outside the US?

Polymarket itself is geo-blocked in the US/UK/EU. Always check the legal status of prediction markets in your jurisdiction before trading.

What does Polymarket cost to trade?

Polymarket itself charges 0% — the only cost is the Polygon network fee, typically under $0.01 per transaction. Off-chain venues like Kalshi or Betfair charge 2-7% commission.

How fast are USDC deposits?

Polygon credits deposits after 12 confirmations — usually under 30 seconds. Withdrawals follow the same path and land back in your wallet within minutes.

Do I need to KYC for this market?

On Polymarket directly, no — it's wallet-based. Intermediary brokers like Polymarket Review UK trigger KYC only above $1,500 of lifetime trading volume; under that you trade pseudonymously with a single wallet address.