空气质量预报
空气质量数据提供者: the Japan Atmospheric Environmental Regional Observation System (環境省大気汚染物質広域監視システム) (soramame.env.go.jp)
Note that the measurement for SO2 (sulfur dioxide) are taken from the station: JP:山形市/山形成沢西 and the measurement for O3 (ozone) are taken from the station: JP:山形市/山形銅町