Highest temperature in Madrid on June 28?

Platform comparison

Market context

Madrid is currently experiencing a historic heatwave that has shattered multiple June temperature records across Spain, with temperatures in southern Andujar reaching 45.1°C and Cantabria hitting 43.7°C[3][7]. This extreme form suggests the 0% crowd-implied probability for a specific high range at Barajas Airport may be misreading the market, as the region’s recent results show unprecedented thermal intensity. Historical data frames this sharply: the highest temperature ever recorded in Madrid on 28 June was 40.7°C in 2019, yet the current heatwave has already produced the warmest night on record in the city, with temperatures not dropping below 26.2°C[4][5]. The line-up of recent weather events indicates that standard averages of 28°C are no longer relevant, and traders should treat the current probability as a potential underestimation of the true thermal ceiling[1].

Traders must watch for official announcements from the Spanish Meteorological Agency (AEMET) regarding the continuation of the red heat alert, which is scheduled to persist through the settlement window ending 28 June 2026[3]. The primary catalyst is the dependency on sustained high-pressure systems over the Iberian Peninsula, which have driven the current record-breaking temperatures; any shift in wind patterns or cloud cover could abruptly alter the peak temperature at Barajas. Recent news confirms that Spain has logged its highest June average temperature since 1950, reinforcing the likelihood that the 28 June peak will exceed historical norms[7]. With no suspensions or injuries in the weather system itself, the head-to-head record between the current heatwave and past June extremes clearly favours higher temperatures, making the 0% probability a significant outlier to monitor closely.

Sources: 1 · 2 · 3 · 4 · 5

Methodology

Football-specific comparison page for Highest temperature in Madrid on June 28?. Polymarket's live quote (Polygon order book) plus platform attributes for the three reference venues. Sports markets reward liquidity — Polymarket and Betfair are materially deeper than Kalshi (US-focused) or Manifold (play-money).

Resolution & payout

Sports markets typically settle on official final-whistle plus league confirmation. Polymarket uses UMA Optimistic Oracle with a source URL per contract — usually official league data feeds or ESPN/Soccerway. Two-hour dispute window, then smart-contract payout in USDC.

FAQ

When do sports markets resolve?

Typically within hours of the official final whistle. Polymarket uses UMA Optimistic Oracle with source URLs pointing at official league data feeds — e.g. the Premier League for EPL markets, UEFA for Champions League, FIFA for World Cup.

Can I bet on individual matches?

Yes, Polymarket lists every major Premier League / Champions League / World Cup match as its own market. Liquidity varies — top matches like El Clásico or a semi-final often have six-figure pools, lower-league games closer to three-figure.

Which sports markets are available?

Football (soccer) dominates — Champions League, World Cup, Premier League, La Liga, Bundesliga — followed by NFL, NBA, tennis Grand Slams, Formula 1, boxing/MMA. Resolution via official league source confirmation.

How fast do sports winnings settle?

Once the official league outcome is logged in the UMA Oracle (typically 1-2 hours after the final whistle), Polymarket's smart contract triggers USDC payout. To your wallet within minutes.

What's the difference between match odds and outright odds?

Match odds cover a single game ("Bayern beats BVB"). Outright odds are long-term aggregates ("Bayern wins the league"). Outright markets have deeper liquidity; match markets have faster resolution.