Busan, South Korea's second-largest city, experiences maritime temperate climate with variable spring weather conditions. April is characterized by gradually warming temperatures as the region transitions from spring to early summer, with typical highs ranging from 12°C to 18°C depending on weather patterns and prevailing wind conditions from the Korean Strait. This market resolves on April 20, 2026, based on the official highest temperature recorded in Busan that calendar day. The YES odds at 1% reflect that achieving exactly 17°C as the daily high is considered a low-probability outcome relative to broader temperature distributions for this time of year. Weather prediction markets like this one allow traders to assess the probability of specific meteorological outcomes using observable, verifiable data from official weather stations and climate records. The current 1% price suggests market participants view this exact temperature threshold as an unlikely edge case outcome given typical April patterns. Historical Busan April highs typically range between 15°C and 19°C, making 17°C fall within the normal range but not the most probable outcome. As the resolution date approaches, odds may shift based on updated weather forecasts and accumulating trader positions reflecting changing confidence in specific temperature ranges.