Weather predictions are a standard subcategory in prediction markets, but betting on the exact highest temperature of a specific city on a particular day is quite niche compared to major political or economic events.

Between 06:28 and 07:33 on April 25, 2026, the YES price for 29°C surged from 20.5c to 30.5c. This was driven by converging weather models as the resolution date approaches, causing traders to concentrate expectations around 29°C to hedge against more extreme high-temperature forecasts.

There is a divergence. AccuWeather explicitly forecasts a high of 34°C (93°F), whereas the resolution source Wunderground forecasts 28°C. The market pricing (concentrated around 29-31°C) does not fully align with any single source, reflecting a compromise between extreme heat and more conservative models.

While the average person does not actively think about the daily high temperature in Buenos Aires, weather markets are a standard and well-established category on prediction platforms, making it moderately novel but not extremely bizarre.

April 26, 2026 - April 26, 2026, the price of the 20°C option plummeted from 33.5c to 20c. This is due to the latest weather forecasts indicating a significant cooling on April 28, with the expected high dropping to around 18°C.

There is a significant divergence between the market and mainstream meteorological forecasts. Mainstream weather sources (like The Weather Channel, Ventusky, Met Office) forecast a high of 16°C to 18°C for April 28, yet the market still assigns nearly a 48% probability to 20°C and above. This is likely because some traders have not yet updated their positions based on the latest colder forecasts.

April 25, 2026 06:28 - 07:33, the price of the 22°C option surged from 19.5c to 29.5c. This is because, as the date approaches, weather forecast models are converging towards a high temperature of approximately 22°C, prompting traders to rapidly accumulate positions in the most likely outcome.

Predicting the exact highest temperature in a specific city on a single day is a rather niche topic. While weather markets exist, the general public almost never thinks about such a specific metric for a random day.