The title asks for the highest temperature in Seoul, but the resolution rules explicitly specify the Incheon Intl Airport Station (RKSI). Incheon Airport is located on the coast/island, and its temperatures often differ significantly from inland central Seoul (potentially by several degrees). This geographic mismatch between the headline and the specific resolution source is a major trap for traders who don't read the fine print.

April 14, 2026, the price of 24°C or higher surged from 13.5c to 56c, and 23°C rose significantly to 45c, while options for 22°C and below crashed to near 0c. The reason is that real-time daytime temperatures in Seoul have already exceeded 22°C, rendering lower options obsolete. April 12, 2026 - April 13, 2026, the price of 22°C surged from 15c to 33c, and the price of 23°C spiked from 9c to 28c, as newly released weather forecast models revised the expected high temperature for April 14 into this range.

The rules mention using the 'Forecast' from Wunderground but provide a link to the 'History' page, which could cause literal ambiguity regarding the resolution criteria. Additionally, occasional missing data on the weather platform or the integer rounding rules when converting from Fahrenheit to Celsius might lead to edge-case disputes.

April 13, 2026 - April 13, 2026, the price of '24°C or higher' plummeted from 45c to 7.5c. The reason is that as the target date approaches, the latest weather forecasts clearly indicate a high of around 21-22°C, largely ruling out the possibility of an extreme high of 24°C or above.

On April 13, 2026, the price of the 28°C option collapsed from 21c to 7c, while the 31°C and 32°C options surged (31°C from 19c to 28.5c; 32°C from 16c to 25c). This was driven by updated short-term weather forecasting models ruling out cooler temperatures and shifting the expected high into the 31-32°C range.

April 12, 2026 - April 13, 2026, the price of '21°C or below' plummeted from a peak of 79.5c to 53.5c, while '22°C' surged from 8c to 30.5c. This is due to updated weather forecasting models closer to the resolution date indicating a warmer expected high for Toronto.

China's Q1 GDP data is a key indicator of global economic health. A miss or beat would directly impact commodities (especially Crude Oil and Copper, given China's consumption) and China-related ETFs (like FXI). The Australian Dollar (AUDUSD), often a proxy for the Chinese economy, would also see significant volatility. While there is some impact on the broader US stock market, it is typically a secondary effect.

April 10, 2026 - April 13, 2026, the price of the '5.0-5.5%' option rebounded quickly from a brief dip at 44.5c to stabilize above 70c, while '4.5-5.0%' fell from 46.5c to around 27c. The reason is that as the data release approaches, market consensus on Q1 GDP growth reaching over 5% has reconsolidated, anchoring capital back in the high-probability bracket. April 11, 2026 - April 12, 2026, the price of the '4.5-5.0%' option dropped from 32.5c to 15c, while '5.0-5.5%' rebounded from 60.5c to 71.5c, as the market likely received confirmation of stronger internal indicators or policy effects, triggering drastic position shifts. April 10, 2026 - April 11, 2026, the price of the '5.0-5.5%' option rebounded sharply from 44.5c to 67.5c, while '4.5-5.0%' dropped from 46.5c to 29.5c, as expectations for meeting the official Q1 economic target warmed up again after brief pessimism. April 10, 2026, the price of the '4.5-5.0%' option surged from 23.5c to 46.5c, while '5.0-5.5%' plummeted from 75.5c to 44.5c, likely due to institutional forecast downgrades or weakening high-frequency indicators right before the release, causing severe market divergence on whether Q1 GDP can hold at 5%. March 30, 2026 - April 8, 2026, the '4.5-5.0%' and '5.0-5.5%' options experienced multiple wide swings of over 15c due to volatile leading indicators and fluctuating policy expectations.

While weather-related forecasting is a staple on prediction market platforms, predicting the exact peak temperature for a specific city on a single day remains a somewhat niche and novelty topic for the general public.

On April 13, 2026, the price of '37°C or below' plummeted from 25.5¢ to 9.0¢, and '40°C' dropped from 27.0¢ to 15.5¢. This is because, as the date approaches, meteorological models have converged, ruling out the possibility of unusually low temperatures. The forecast consensus is shifting slightly towards 39°C or 41°C, partially squeezing the probability of exactly 40°C.

Currently, the '64-65°F' option is leading the market at 22.5c, while '70-71°F' is only priced at 18c. This diverges from the latest explicit NWS forecast, which predicts a high near 70°F. The divergence is likely due to the market lagging behind the latest weather updates or investors factoring in the volatility of high-altitude weather. As time progresses and forecast certainty increases, capital will likely migrate towards the 70-71°F range.

On April 13, 2026, the prices of options such as 22°C, 24°C, 26°C, and 28°C or higher dropped by more than 10 cents (e.g., 24°C fell from 28.5c to 15.5c, and 28°C or higher from 12.5c to 1.5c). The reason is that as the target date approaches, weather forecast models have converged more tightly around 23°C, significantly reducing the probability of tail temperatures.

Weather prediction is a standard niche in prediction markets, but guessing the exact temperature in Istanbul on a specific day remains somewhat trivial and niche for the general public.

On April 13, 2026, the price of the '10°C or below' option plummeted from 26c to 4c. This is due to updated weather forecasts closer to the resolution date confirming milder spring temperatures, largely ruling out the possibility of extreme cold.

Predicting the weather for a specific city on a specific date is not entirely uncommon in prediction markets, but for most traders not living there, a single day's temperature in Ankara, Turkey, is a rather niche and specific mundane topic.

On April 13, 2026, the price of the 21°C option surged from 14.5c to 26c. This was due to some weather models upgrading the expected temperature for that day as the resolution date approaches, causing funds to quickly concentrate on the higher temperature option.

There is some divergence. The UK Met Office predicts a high of 17°C for April 15 [9], while the market's highest implied probabilities are for 21°C and 19°C. This suggests that traders lean toward models like AccuWeather which provide warmer forecasts (around 20°C) [14], or they rely on local station data trends that often run hotter than baseline public forecasts.

This is a prediction about the high temperature in a specific city on a specific date. While weather forecasting is a common daily activity, setting up a specific short-term prediction market for an exact degree in Warsaw is a relatively niche and specific market.

On April 13, 2026, the price of '56-57°F' dropped from 16.5c to 4.5c. This occurred because, as the date approaches, weather forecast models are trending towards higher temperatures, largely ruling out the lower temperature ranges. On April 13, 2026, the prices for '50-51°F', '52-53°F', and '54-55°F' also saw significant declines, similarly due to short-term forecasts confirming that the temperature will likely be above 55°F.

While checking the weather forecast is a daily habit, predicting the exact high temperature of a specific city on a specific day as a tradable market is somewhat novel and niche for the general public.

April 13, 2026 - April 14, 2026, the Yes price of 22°C surged from 35c to 47.5c, while 23°C fell from 41.5c to 28.5c, and 24°C plummeted from 17c to 3.5c. As the resolution day approached, real-time data and updated forecasts indicated the high is more likely to stall at 22°C, reducing the probabilities of 23°C and above. April 13, 2026 - April 13, 2026, the Yes price of 23°C climbed from 25.5c to 41.5c. Updated short-term weather models favor a warmer outcome around 73°F (22.8°C), shifting market confidence toward 23°C. April 12, 2026 - April 13, 2026, the Yes price of 21°C plummeted from 35c to 6c. This is because weather forecasts further confirmed the high would reach 22°C-23°C, drastically reducing the probability of 21°C.

From April 12, 2026, to April 13, 2026, the price of the 17°C option plummeted from 22.5c to 0.8c, as updated forecasts closer to the date ruled out significant cooling. From April 12, 2026, to April 13, 2026, the price of the 18°C option dropped from 23.0c to 1.2c, similarly due to increased forecast certainty eliminating cooler extremes. From April 12, 2026, to April 13, 2026, the price of the 19°C option fell from 26.5c to 6.5c, as the forecast center shifted towards the higher 20°C or 21°C. From April 12, 2026, to April 13, 2026, the price of the 20°C option climbed from 28.0c to 41.0c, as forecasts further confirmed this temperature range as the most likely. From April 12, 2026, to April 13, 2026, the price of the 22°C option dropped from 25.0c to 12.5c, as forecasts ruled out abnormally warm anomalies.

April 12, 2026 - April 13, 2026, the price of '28°C' plunged from 27.5c to 2.45c, while '31°C' surged from 8.5c to 23.05c, and '29°C' rose to 40c. The reason is that updated aviation weather forecasts (TAF) for Shenzhen Bao'an Airport revised the expected high temperature upward to around 30°C, drastically reducing the likelihood of 28°C and driving capital into higher temperature brackets. No options have experienced a drastic price movement of over 10c recently; prices have remained stable in line with minor adjustments in weather forecasts.