{"city":"Hoàn Kiếm","country":"Vietnam","lat":21.0285701751709,"lon":105.85063934326172,"range":"48h","license":"CC BY 4.0","source":"https://cerns.io","hourly":[{"datetime_utc":"2026-07-20T06:00:00Z","aqi":19,"aqi_min":19,"aqi_max":19,"pm25":4.62300443649292,"pm10":4.917805194854736,"stations":2},{"datetime_utc":"2026-07-20T07:00:00Z","aqi":21,"aqi_min":21,"aqi_max":21,"pm25":5.110036373138428,"pm10":5.331136226654053,"stations":2},{"datetime_utc":"2026-07-20T08:00:00Z","aqi":23,"aqi_min":23,"aqi_max":23,"pm25":5.578935623168945,"pm10":6.102206707000732,"stations":2},{"datetime_utc":"2026-07-20T09:00:00Z","aqi":46,"aqi_min":46,"aqi_max":46,"pm25":11.028142929077148,"pm10":11.867774963378906,"stations":2},{"datetime_utc":"2026-07-20T10:00:00Z","aqi":57,"aqi_min":57,"aqi_max":57,"pm25":15.063241004943848,"pm10":17.642745971679688,"stations":2},{"datetime_utc":"2026-07-20T11:00:00Z","aqi":73,"aqi_min":73,"aqi_max":73,"pm25":22.43999481201172,"pm10":26.201330184936523,"stations":2},{"datetime_utc":"2026-07-20T12:00:00Z","aqi":78,"aqi_min":78,"aqi_max":78,"pm25":25.08400535583496,"pm10":27.44767189025879,"stations":2},{"datetime_utc":"2026-07-20T13:00:00Z","aqi":90,"aqi_min":90,"aqi_max":90,"pm25":30.819561004638672,"pm10":37.420433044433594,"stations":2},{"datetime_utc":"2026-07-20T14:00:00Z","aqi":84,"aqi_min":84,"aqi_max":84,"pm25":27.70444107055664,"pm10":32.87384796142578,"stations":2},{"datetime_utc":"2026-07-20T15:00:00Z","aqi":113,"aqi_min":113,"aqi_max":113,"pm25":40.32769012451172,"pm10":45.40486526489258,"stations":2},{"datetime_utc":"2026-07-20T16:00:00Z","aqi":128,"aqi_min":128,"aqi_max":128,"pm25":46.480289459228516,"pm10":56.35078430175781,"stations":2},{"datetime_utc":"2026-07-20T17:00:00Z","aqi":118,"aqi_min":118,"aqi_max":118,"pm25":42.37041091918945,"pm10":51.62442398071289,"stations":2},{"datetime_utc":"2026-07-20T18:00:00Z","aqi":108,"aqi_min":108,"aqi_max":108,"pm25":38.269893646240234,"pm10":47.13494873046875,"stations":2},{"datetime_utc":"2026-07-20T19:00:00Z","aqi":98,"aqi_min":98,"aqi_max":98,"pm25":34.67898941040039,"pm10":42.30154037475586,"stations":2},{"datetime_utc":"2026-07-20T20:00:00Z","aqi":93,"aqi_min":93,"aqi_max":93,"pm25":32.0577392578125,"pm10":47.98222732543945,"stations":2},{"datetime_utc":"2026-07-20T21:00:00Z","aqi":71,"aqi_min":71,"aqi_max":71,"pm25":21.565324783325195,"pm10":30.898883819580078,"stations":2},{"datetime_utc":"2026-07-20T22:00:00Z","aqi":76,"aqi_min":76,"aqi_max":76,"pm25":23.96209144592285,"pm10":29.37889862060547,"stations":2},{"datetime_utc":"2026-07-20T23:00:00Z","aqi":74,"aqi_min":74,"aqi_max":74,"pm25":23.193952560424805,"pm10":30.429353713989258,"stations":2},{"datetime_utc":"2026-07-21T00:00:00Z","aqi":96,"aqi_min":96,"aqi_max":96,"pm25":33.322669982910156,"pm10":45.672611236572266,"stations":2},{"datetime_utc":"2026-07-21T01:00:00Z","aqi":90,"aqi_min":90,"aqi_max":90,"pm25":30.415658950805664,"pm10":40.51496505737305,"stations":2},{"datetime_utc":"2026-07-21T02:00:00Z","aqi":109,"aqi_min":109,"aqi_max":109,"pm25":38.9229736328125,"pm10":45.926815032958984,"stations":2},{"datetime_utc":"2026-07-21T03:00:00Z","aqi":105,"aqi_min":105,"aqi_max":105,"pm25":36.99791717529297,"pm10":47.6551399230957,"stations":2},{"datetime_utc":"2026-07-21T04:00:00Z","aqi":106,"aqi_min":106,"aqi_max":106,"pm25":37.404319763183594,"pm10":40.570735931396484,"stations":2},{"datetime_utc":"2026-07-21T05:00:00Z","aqi":98,"aqi_min":98,"aqi_max":98,"pm25":34.314598083496094,"pm10":36.63856887817383,"stations":2},{"datetime_utc":"2026-07-21T06:00:00Z","aqi":96,"aqi_min":96,"aqi_max":96,"pm25":33.65495681762695,"pm10":39.3377571105957,"stations":2},{"datetime_utc":"2026-07-21T07:00:00Z","aqi":101,"aqi_min":101,"aqi_max":101,"pm25":35.531227111816406,"pm10":38.321250915527344,"stations":2},{"datetime_utc":"2026-07-21T08:00:00Z","aqi":101,"aqi_min":101,"aqi_max":101,"pm25":35.4660530090332,"pm10":38.98044967651367,"stations":2},{"datetime_utc":"2026-07-21T09:00:00Z","aqi":80,"aqi_min":80,"aqi_max":80,"pm25":25.7653865814209,"pm10":28.789722442626953,"stations":2},{"datetime_utc":"2026-07-21T10:00:00Z","aqi":79,"aqi_min":79,"aqi_max":79,"pm25":25.642772674560547,"pm10":30.559581756591797,"stations":2},{"datetime_utc":"2026-07-21T11:00:00Z","aqi":94,"aqi_min":94,"aqi_max":94,"pm25":32.4856071472168,"pm10":36.4495735168457,"stations":2},{"datetime_utc":"2026-07-21T12:00:00Z","aqi":89,"aqi_min":89,"aqi_max":89,"pm25":29.96798324584961,"pm10":34.42675018310547,"stations":2},{"datetime_utc":"2026-07-21T13:00:00Z","aqi":92,"aqi_min":92,"aqi_max":92,"pm25":31.429380416870117,"pm10":34.79625701904297,"stations":2},{"datetime_utc":"2026-07-21T14:00:00Z","aqi":86,"aqi_min":86,"aqi_max":86,"pm25":28.714630126953125,"pm10":34.10770797729492,"stations":2},{"datetime_utc":"2026-07-21T15:00:00Z","aqi":123,"aqi_min":123,"aqi_max":123,"pm25":44.53174591064453,"pm10":54.16741180419922,"stations":2},{"datetime_utc":"2026-07-21T16:00:00Z","aqi":103,"aqi_min":103,"aqi_max":103,"pm25":36.21342086791992,"pm10":43.42007064819336,"stations":2},{"datetime_utc":"2026-07-21T17:00:00Z","aqi":77,"aqi_min":77,"aqi_max":77,"pm25":24.264991760253906,"pm10":29.06859016418457,"stations":2},{"datetime_utc":"2026-07-21T18:00:00Z","aqi":75,"aqi_min":75,"aqi_max":75,"pm25":23.69280433654785,"pm10":30.502145767211914,"stations":2},{"datetime_utc":"2026-07-21T19:00:00Z","aqi":75,"aqi_min":75,"aqi_max":75,"pm25":23.631319046020508,"pm10":25.813331604003906,"stations":2},{"datetime_utc":"2026-07-21T20:00:00Z","aqi":114,"aqi_min":114,"aqi_max":114,"pm25":40.92451477050781,"pm10":49.21030807495117,"stations":2},{"datetime_utc":"2026-07-21T21:00:00Z","aqi":92,"aqi_min":92,"aqi_max":92,"pm25":31.81224250793457,"pm10":38.82158660888672,"stations":2},{"datetime_utc":"2026-07-21T22:00:00Z","aqi":130,"aqi_min":130,"aqi_max":130,"pm25":47.20109176635742,"pm10":52.75676727294922,"stations":2},{"datetime_utc":"2026-07-21T23:00:00Z","aqi":113,"aqi_min":113,"aqi_max":113,"pm25":40.422462463378906,"pm10":49.358463287353516,"stations":2},{"datetime_utc":"2026-07-22T00:00:00Z","aqi":116,"aqi_min":116,"aqi_max":116,"pm25":41.559913635253906,"pm10":49.98503494262695,"stations":2},{"datetime_utc":"2026-07-22T01:00:00Z","aqi":120,"aqi_min":120,"aqi_max":120,"pm25":43.069705963134766,"pm10":51.74485778808594,"stations":2},{"datetime_utc":"2026-07-22T02:00:00Z","aqi":99,"aqi_min":99,"aqi_max":99,"pm25":34.86284637451172,"pm10":38.12131118774414,"stations":2},{"datetime_utc":"2026-07-22T03:00:00Z","aqi":77,"aqi_min":77,"aqi_max":77,"pm25":24.67681884765625,"pm10":27.95568084716797,"stations":2},{"datetime_utc":"2026-07-22T04:00:00Z","aqi":80,"aqi_min":80,"aqi_max":80,"pm25":26.019405364990234,"pm10":28.369739532470703,"stations":2}],"daily":[{"date":"2026-07-20","aqi_avg":76,"aqi_min":19,"aqi_max":128,"aqi_color":"#d97706","aqi_label":"Moderate","pm25_avg":25.0,"pm10_avg":30.6,"hours":18,"stations_avg":2},{"date":"2026-07-21","aqi_avg":97,"aqi_min":75,"aqi_max":130,"aqi_color":"#d97706","aqi_label":"Moderate","pm25_avg":33.4,"pm10_avg":39.4,"hours":24,"stations_avg":2},{"date":"2026-07-22","aqi_avg":98,"aqi_min":77,"aqi_max":120,"aqi_color":"#d97706","aqi_label":"Moderate","pm25_avg":34.0,"pm10_avg":39.2,"hours":5,"stations_avg":2}]}