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) and the Ibaraki Prefecture EPA (茨城県大気汚染常時監視システム) (taiki.pref.ibaraki.jp)
Note that the measurements for SO2 (sulfur dioxide) and O3 (ozone) are taken from the station: Shimotakatsu, Tsuchiura, Ibaraki