대기질 예보
대기질 데이터 제공: 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 NO2 (nitrogen dioxide) are taken from the station: Koyacho, Nagai, Yamagata and the measurement for CO (carbon monoxide) are taken from the station: Motojonai, Kaminoyama, Yamagata