{"city":"Niigata","country":"Japan","lat":37.92258834838867,"lon":139.04124450683594,"range":"48h","license":"CC BY 4.0","source":"https://cerns.io","hourly":[{"datetime_utc":"2026-05-27T15:00:00Z","aqi":24,"aqi_min":10,"aqi_max":36,"pm25":5.84,"pm10":null,"stations":3},{"datetime_utc":"2026-05-27T16:00:00Z","aqi":17,"aqi_min":17,"aqi_max":17,"pm25":4.08,"pm10":null,"stations":1},{"datetime_utc":"2026-05-27T17:00:00Z","aqi":37,"aqi_min":5,"aqi_max":57,"pm25":8.9,"pm10":null,"stations":3},{"datetime_utc":"2026-05-27T18:00:00Z","aqi":37,"aqi_min":21,"aqi_max":54,"pm25":8.93,"pm10":null,"stations":4},{"datetime_utc":"2026-05-27T19:00:00Z","aqi":28,"aqi_min":13,"aqi_max":45,"pm25":6.64,"pm10":null,"stations":3},{"datetime_utc":"2026-05-27T20:00:00Z","aqi":31,"aqi_min":7,"aqi_max":42,"pm25":7.39,"pm10":null,"stations":5},{"datetime_utc":"2026-05-27T21:00:00Z","aqi":31,"aqi_min":21,"aqi_max":50,"pm25":7.38,"pm10":null,"stations":4},{"datetime_utc":"2026-05-27T22:00:00Z","aqi":28,"aqi_min":9,"aqi_max":57,"pm25":6.74,"pm10":null,"stations":3},{"datetime_utc":"2026-05-27T23:00:00Z","aqi":23,"aqi_min":9,"aqi_max":42,"pm25":5.52,"pm10":null,"stations":5},{"datetime_utc":"2026-05-28T00:00:00Z","aqi":38,"aqi_min":4,"aqi_max":58,"pm25":8.96,"pm10":null,"stations":4},{"datetime_utc":"2026-05-28T01:00:00Z","aqi":19,"aqi_min":10,"aqi_max":25,"pm25":4.56,"pm10":null,"stations":3},{"datetime_utc":"2026-05-28T02:00:00Z","aqi":46,"aqi_min":46,"aqi_max":46,"pm25":11.04,"pm10":null,"stations":2},{"datetime_utc":"2026-05-28T03:00:00Z","aqi":24,"aqi_min":5,"aqi_max":37,"pm25":5.84,"pm10":null,"stations":3},{"datetime_utc":"2026-05-28T04:00:00Z","aqi":31,"aqi_min":17,"aqi_max":50,"pm25":7.54,"pm10":null,"stations":5},{"datetime_utc":"2026-05-28T05:00:00Z","aqi":17,"aqi_min":6,"aqi_max":21,"pm25":4.14,"pm10":null,"stations":4},{"datetime_utc":"2026-05-28T06:00:00Z","aqi":33,"aqi_min":20,"aqi_max":50,"pm25":7.92,"pm10":null,"stations":4},{"datetime_utc":"2026-05-28T07:00:00Z","aqi":35,"aqi_min":34,"aqi_max":37,"pm25":8.52,"pm10":null,"stations":2},{"datetime_utc":"2026-05-28T08:00:00Z","aqi":30,"aqi_min":13,"aqi_max":51,"pm25":7.35,"pm10":null,"stations":4},{"datetime_utc":"2026-05-28T09:00:00Z","aqi":32,"aqi_min":22,"aqi_max":46,"pm25":7.56,"pm10":null,"stations":4},{"datetime_utc":"2026-05-28T10:00:00Z","aqi":25,"aqi_min":13,"aqi_max":43,"pm25":5.88,"pm10":null,"stations":4},{"datetime_utc":"2026-05-28T12:00:00Z","aqi":43,"aqi_min":25,"aqi_max":59,"pm25":10.34,"pm10":null,"stations":4},{"datetime_utc":"2026-05-28T13:00:00Z","aqi":26,"aqi_min":7,"aqi_max":38,"pm25":6.16,"pm10":null,"stations":3},{"datetime_utc":"2026-05-28T14:00:00Z","aqi":40,"aqi_min":30,"aqi_max":46,"pm25":9.52,"pm10":null,"stations":3},{"datetime_utc":"2026-05-28T15:00:00Z","aqi":26,"aqi_min":17,"aqi_max":35,"pm25":6.24,"pm10":null,"stations":2},{"datetime_utc":"2026-05-28T16:00:00Z","aqi":43,"aqi_min":21,"aqi_max":57,"pm25":10.4,"pm10":null,"stations":5},{"datetime_utc":"2026-05-28T17:00:00Z","aqi":43,"aqi_min":21,"aqi_max":57,"pm25":10.34,"pm10":null,"stations":3},{"datetime_utc":"2026-05-28T18:00:00Z","aqi":17,"aqi_min":17,"aqi_max":17,"pm25":4.08,"pm10":null,"stations":1},{"datetime_utc":"2026-05-28T19:00:00Z","aqi":26,"aqi_min":14,"aqi_max":37,"pm25":6.16,"pm10":null,"stations":3},{"datetime_utc":"2026-05-28T20:00:00Z","aqi":31,"aqi_min":12,"aqi_max":42,"pm25":7.5,"pm10":null,"stations":4},{"datetime_utc":"2026-05-28T21:00:00Z","aqi":34,"aqi_min":13,"aqi_max":59,"pm25":8.18,"pm10":null,"stations":4},{"datetime_utc":"2026-05-28T22:00:00Z","aqi":32,"aqi_min":13,"aqi_max":56,"pm25":7.7,"pm10":null,"stations":4},{"datetime_utc":"2026-05-28T23:00:00Z","aqi":30,"aqi_min":9,"aqi_max":50,"pm25":7.08,"pm10":null,"stations":2},{"datetime_utc":"2026-05-29T00:00:00Z","aqi":31,"aqi_min":21,"aqi_max":37,"pm25":7.36,"pm10":null,"stations":3},{"datetime_utc":"2026-05-29T01:00:00Z","aqi":24,"aqi_min":13,"aqi_max":36,"pm25":5.82,"pm10":null,"stations":4},{"datetime_utc":"2026-05-29T02:00:00Z","aqi":30,"aqi_min":21,"aqi_max":40,"pm25":7.32,"pm10":null,"stations":2},{"datetime_utc":"2026-05-29T03:00:00Z","aqi":40,"aqi_min":40,"aqi_max":40,"pm25":9.6,"pm10":null,"stations":1},{"datetime_utc":"2026-05-29T04:00:00Z","aqi":34,"aqi_min":25,"aqi_max":42,"pm25":8.16,"pm10":null,"stations":3},{"datetime_utc":"2026-05-29T05:00:00Z","aqi":34,"aqi_min":34,"aqi_max":35,"pm25":8.24,"pm10":null,"stations":3},{"datetime_utc":"2026-05-29T06:00:00Z","aqi":55,"aqi_min":10,"aqi_max":112,"pm25":13.96,"pm10":null,"stations":5},{"datetime_utc":"2026-05-29T07:00:00Z","aqi":32,"aqi_min":18,"aqi_max":47,"pm25":7.8,"pm10":null,"stations":2},{"datetime_utc":"2026-05-29T08:00:00Z","aqi":30,"aqi_min":30,"aqi_max":30,"pm25":7.2,"pm10":null,"stations":1},{"datetime_utc":"2026-05-29T09:00:00Z","aqi":36,"aqi_min":11,"aqi_max":58,"pm25":8.74,"pm10":null,"stations":3},{"datetime_utc":"2026-05-29T10:00:00Z","aqi":37,"aqi_min":25,"aqi_max":55,"pm25":8.91,"pm10":null,"stations":3},{"datetime_utc":"2026-05-29T11:00:00Z","aqi":35,"aqi_min":17,"aqi_max":57,"pm25":8.27,"pm10":null,"stations":5},{"datetime_utc":"2026-05-29T12:00:00Z","aqi":36,"aqi_min":17,"aqi_max":53,"pm25":8.57,"pm10":null,"stations":2},{"datetime_utc":"2026-05-29T13:00:00Z","aqi":30,"aqi_min":25,"aqi_max":34,"pm25":7.2,"pm10":null,"stations":4}],"daily":[{"date":"2026-05-27","aqi_avg":28,"aqi_min":17,"aqi_max":37,"aqi_color":"#059669","aqi_label":"Good","pm25_avg":6.8,"pm10_avg":null,"hours":9,"stations_avg":3},{"date":"2026-05-28","aqi_avg":31,"aqi_min":17,"aqi_max":46,"aqi_color":"#059669","aqi_label":"Good","pm25_avg":7.5,"pm10_avg":null,"hours":23,"stations_avg":3},{"date":"2026-05-29","aqi_avg":35,"aqi_min":24,"aqi_max":55,"aqi_color":"#059669","aqi_label":"Good","pm25_avg":8.4,"pm10_avg":null,"hours":14,"stations_avg":3}]}