While daily weather forecasts are a regular part of life, betting on the exact maximum temperature range of a specific city on a single day is somewhat niche and a novelty for the general public, despite being a staple in prediction markets.

April 21, 2026 - April 22, 2026, the price of the 28°C option plummeted from 32.5c to 9.5c. The reason is that as the morning of April 22 approached, the actual temperature showed a clear upward trend, causing the market to largely price out the possibility of the high being only 28°C. April 21, 2026 - April 22, 2026, the price of the 30°C option fluctuated, dropping from 44c to 29.5c before rebounding to 39.5c. The reason is intraday minor adjustments in meteorological data causing investor divergence on whether the 30°C threshold would be reached, though confidence was ultimately restored. April 21, 2026 - April 21, 2026, the price of the 30°C option surged from 20.5c to 41c. The reason is that as the resolution day approaches, the latest HKO weather forecast consistently confirmed a high of 30°C, significantly boosting market confidence. April 20, 2026 - April 21, 2026, the price of the 29°C option rose from 33.5c to peak at 56c (before settling at 39.5c). The reason is that while the forecast upper bound remained 30°C, potential showers made 29°C a highly competitive alternative.

The title broadly says 'Shanghai', but rules explicitly specify the 'Pudong International Airport (ZSPD)' station. Being coastal, its spring temperature often differs significantly from downtown Shanghai. Traders relying on generic Shanghai forecasts risk misjudgment. Strict reliance on Wunderground's whole-degree rounding also introduces minor technical risks.

April 20, 2026 - April 21, 2026, the price of the 18°C option climbed steadily from 30.5c to 48.5c, while the 17°C option dropped significantly from 31.5c to 13.5c. This occurred because, as the target date approached, updated meteorological forecasts converged, confirming it was highly unlikely the high would cap at 17°C, thereby shifting funds and implied probabilities toward the 18°C and 19°C options.

Predicting the daily high temperature in a specific city is a common derivative market in prediction markets. It is not a mainstream political or financial event of high public interest, but neither is it an extremely bizarre or niche question, placing it as a moderately exotic daily novelty market.

April 20, 2026 - April 21, 2026, the price of the 32°C option gradually climbed from 34c to 45c, while the 31°C option fell from 23c to 13c. This is primarily due to weather forecast models converging as the date approaches, confirming a higher probability of temperatures reaching 32°C or above.

Predicting the daily high temperature for a specific city is a niche market. While standard in weather derivatives, it is not a mainstream topic for general prediction market participants, giving it a moderate novelty score.

April 20, 2026 - April 21, 2026, the price of the '17°C or higher' option surged from 70c to around 96c, while the '16°C' option dropped from 14.5c to 3.5c, and the '15°C' option fell from 10.5c to 0.5c. The reason is that as the target date (April 22) approaches, the uncertainty of weather forecasts significantly decreases. The latest meteorological data confirmed that the highest temperature at Milan Malpensa Airport will reliably reach or exceed 17°C, prompting capital to quickly concentrate on this outcome.