These prediction markets focus on Seoul's maximum temperature on May 18, 2026. Weather forecasting has traditionally relied on specialized meteorological expertise, but prediction markets offer a complementary approach: they aggregate real-time views from many participants about what atmospheric conditions are most likely to occur. The three markets here—tracking whether Seoul will reach 16°C, whether it will reach 15°C or below, and whether it will reach 17°C—all measure the same underlying event: the day's highest temperature. By observing prices across these related markets, you can infer what the crowd believes about Seoul's temperature range on that date. If the 17°C market trades at high odds while the 16°C market trades lower, it signals participants expect Seoul to be warm (above 17°C). Conversely, strong interest in the 15°C-or-below market suggests participants are pricing in cooler conditions. The relative odds across these thresholds also reveal where the greatest uncertainty lies—the threshold that markets find hardest to call is where prices typically reflect the most balanced expectations. These markets are useful for anyone interested in Seoul's weather, whether for event planning, infrastructure maintenance, agricultural concerns, or academic interest in how prediction markets compare to traditional weather forecasts. Prices update in real time as new information emerges and participants adjust their positions. The odds below show what market participants currently expect for Seoul's maximum temperature on May 18.