日記32 : Humidity Again

Same as yesterday, I failed to have anything on my mind except for humidity.

It seemed to grow more intense by the day, and I found myself wondering if there were records of humidity changes over the years. While temperature charts are common in discussions about climate change, I had never come across a chart for humidity, so I decided to look for one and succeeded.

気象庁 | ヒートアイランド現象

To my surprise, the relative humidity in Japanese cities has been decreasing. The Japan Meteorological Agency explains that this is due to the increase in saturated vapor pressure as temperatures rise. This explanation makes sense, but I’m not sure it aligns with how people actually feel.