Highest temperature in Madrid on August 19?
https://polymarket.com/es/event/highest-temperature-in-madrid-on-august-19-2026
📊 Market Summary
🌦️ Highest temperature in Madrid on August 19?
| Outcome | Current Odds |
|---|---|
| 36°C | 74% |
| 37°C | 18% |
| 35°C | 8% |
| 38°C | 1% |
| 34°C | 0.5% |
| 39°C | 0.5% |
| 32°C or below | 0.1% |
| 33°C | 0.1% |
8 options total
🎯 Best Trade
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Action: 36°C — NO @ 26%
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Confidence: 🔴 LOW · Uncertainty: MEDIUM
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Why — the case against 36°C:
- Forecast consensus from AEMET and other sources converges on 36°C for Madrid on August 19, but some sources predict 38-40°C, introducing upside risk.
- The airport station (Barajas) tends to run cooler than the urban heat island, so the recorded high may fall below the forecast peak.
- The market's 74% implies a narrow distribution, but medium-range forecast skill for exact max temps is limited, suggesting the true probability is lower.
📈 Where the Market Stands
| Option | Market | Read |
|---|---|---|
| 36°C | 74% | 🔴 OVERPRICED |
| 37°C | 18% | 🟢 UNDERPRICED |
| 35°C | 8% | 🟢 UNDERPRICED |
Verdicts compare my own read against the market price — 🟢 UNDERPRICED (market has it too low) · 🔴 OVERPRICED (market has it too high). The analysis below is the why.
🔬 9-Pillar Analysis (Meteorological Method)
🌡️ 1. Forecast Consensus
My Vegas Line reads 36°C as the clear favorite at 74%, with 37°C at 18% and 35°C at 8%, reflecting a tight distribution around the forecast consensus.
📊 2. Ensemble Spread
Ensemble spread data is not published for this niche single-city temperature market, but the market's own probability spread (74/18/8) implies a narrow distribution, which may understate the true uncertainty in a 5-day forecast.
⏳ 3. Forecast Skill Decay
The market prices 36°C at 74% for a date several days out, but medium-range forecasts (5+ days) have historically lower skill for exact maximum temperatures, suggesting the market may be overconfident.
📈 4. Historical Base Rate
Historical base rate data for Madrid on August 19 is not available in the intelligence, but climatologically, Madrid's August highs typically range 32-38°C, with 36°C being a plausible but not dominant outcome.
🔀 5. Model Divergence
Model divergence is evident: some sources forecast 38°C or 40°C for Madrid on August 19, while others converge on 36°C; if the warmer outlier is right, 36°C becomes less likely.
📍 6. Micro-Climate Bias
The station is Adolfo Suárez Madrid-Barajas Airport, which is slightly cooler than the urban heat island of central Madrid; this could bias the recorded high lower than city-center forecasts.
🌀 7. Storm Track
No storm track applies here; the main risk is a heat plume shift that could push temperatures higher or lower than the consensus, but the forecast cone is stable around 36°C.
💰 8. Market Pricing
MEDIUM - The market is liquid (59k volume) and prices align with the forecast consensus, but the 74% on 36°C may be slightly overpriced given model spread and the airport's cooling bias.
⚡ 9. Contrarian Check
The main contrarian risk is that the market is overpricing 36°C; if the warmer outlier (38-40°C) verifies, 36°C loses, and the trailing 37°C or 35°C could be underpriced.
⚠️ Disclaimer: AI can make mistakes. This is not financial advice, and not a meteorological forecast — verify against NWS/NOAA and current model output before placing any trades.
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