Mexico City's climate in mid-April typically sees daytime highs between 25°C and 28°C, making a peak of exactly 19°C unusually cool for this time of year. This market tracks whether the highest temperature recorded in Mexico City on April 19, 2026, will be exactly 19°C. The current 0% YES odds indicate traders believe it is extremely unlikely that the day's maximum temperature will be precisely 19°C. For the market to resolve YES, the National Weather Service (Servicio Meteorológico Nacional) official maximum temperature reading must equal 19°C. Such a reading would require unusually cold conditions—potentially from a cold front or unusual weather system passing through the region. The 24-hour trading volume of $624 reflects the specific nature of daily weather prediction markets, which appeal to traders focused on precise meteorological outcomes. The probability has remained near zero since market inception, suggesting strong trader consensus that cooler temperatures are unlikely. Should weather forecasts shift dramatically to show a significant cold front approaching central Mexico, odds might adjust upward, though current atmospheric conditions continue to favor warm temperatures typical for April.