As Figure 1 shows, the number of such nights has increased significantly all over Taiwan in the past half century. The biggest rise, however, is in Taipei City, where the number of nights above 25oC has increased from an average of 35 days per year to over 100.
圖一顯示，過去 50 年來，全台不論何地「晚上需要開冷氣」的天數皆明顯增加，然而又以台北市的增加幅度最大（從 1 年 35 天增加至 1 年超過 100 天）。