Taipei's weather on April 18 will be shaped by typical late spring conditions. The question focuses on whether the daily high temperature will be exactly 21°C, a specific threshold reflecting mild spring weather in Taiwan. However, historical April data shows Taipei typically experiences afternoon highs between 25–30°C, making a peak of 21°C somewhat cooler than seasonal norms. The current market price of 0% YES odds reflects strong trader consensus that this outcome is highly unlikely. This extreme bearish pricing suggests market participants expect Taipei's temperature to be either significantly warmer or cooler than this particular threshold on April 18. As the resolution date approaches, updated weather forecasts will provide more detailed guidance on likely temperature ranges. Official resolution will use meteorological data from Taiwan's Central Weather Bureau, which maintains continuous temperature monitoring across the region. The market's sustained pricing at 0% indicates unwavering trader conviction that reaching exactly 21°C is an improbable outcome given typical spring weather patterns. While weather can produce unexpected results, the current odds reflect the low probability assigned by active market participants.