Highest temperature in Madrid on August 7?

Platform comparison

Market context

Polymarket is pricing the Madrid airport temperature contract at **0% YES** right now, so the conditional tokens on Polygon are effectively treating a qualifying heat reading as not expected. That sits against a real-world setup where Madrid is in its hottest spell of the year and forecasts for 7 August point to sunny, very warm conditions, with several public forecasts around the mid-to-high 30s Celsius and an official yellow high-temperature warning for the Madrid metropolitan area and Henares. [2][3][4][6][7]

For context, late-summer Madrid commonly posts daytime highs in the low-to-mid 30s Celsius, and August is widely described as the city’s hottest period; that makes a move into the upper 30s plausible rather than exceptional. Independent forecasts for 7 August cluster around 36-38°C, while AEMET-linked reporting says temperatures above 35°C should be widespread across the interior, which is the kind of setup that usually leaves little room for a cooler-than-expected airport reading if the heat peaks before the settlement window closes. [9][11][12][13]

A trader watching this market should focus on two things: the timing of the day’s peak heat and the exact Weather Underground **Daily Observations** entries for Adolfo Suárez Madrid-Barajas Airport, since the market settles on that table rather than the summary high/low. The useful catalysts are therefore the afternoon temperature trend, any updated AEMET warning text, and whether cloud cover, wind or a late-day sea-breeze effect trims the airport maximum below the next bracket; the official warning window cited by AccuWeather runs from 1:00 pm to 9:00 pm local time, which is the period most likely to capture the day’s high. [1][3][12]

Sources: 1 · 2 · 3 · 4 · 5

Methodology

This page is a comparison snapshot: one live quote, four reference venues with their key attributes, and a single execution path — every trade button routes to PolyGram, which mirrors the Polymarket order book directly.

Resolution & payout

Settlement runs on-chain. Polymarket's contract logic separates YES and NO shares as conditional tokens; at resolution the winning share lifts to $1.00 and the losing one to $0. The outcome input comes from the UMA Optimistic Oracle, which secures against bad resolution with a bond + dispute window.

Once finalised, the smart contract pays USDC to the holders' wallets within minutes — no withdrawal fees beyond Polygon network gas. Kalshi settles in USD via CFTC clearance, Betfair in account currency net of commission, Manifold in play-money mana with no cash-out.

FAQ

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.

How does resolution work?

Through the UMA Optimistic Oracle on Polygon: a proposer submits the outcome, a two-hour challenge window opens, and USDC payouts settle automatically once the result is final.

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.

Do I need to KYC for this market?

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

How reliable are the quoted odds?

The YES/NO percentages are the live mid-prices of the Polymarket order book. On deep markets they move every few seconds; on thinner ones you'll see short plateaus.