{"city":"Chestnut Hill","country":"United States","lat":42.330650329589844,"lon":-71.1661605834961,"range":"48h","license":"CC BY 4.0","source":"https://cerns.io","hourly":[{"datetime_utc":"2026-05-28T02:00:00Z","aqi":33,"aqi_min":28,"aqi_max":38,"pm25":7.92,"pm10":null,"stations":2},{"datetime_utc":"2026-05-28T03:00:00Z","aqi":28,"aqi_min":23,"aqi_max":34,"pm25":6.83,"pm10":null,"stations":2},{"datetime_utc":"2026-05-28T04:00:00Z","aqi":28,"aqi_min":19,"aqi_max":34,"pm25":6.82,"pm10":null,"stations":5},{"datetime_utc":"2026-05-28T05:00:00Z","aqi":23,"aqi_min":16,"aqi_max":30,"pm25":5.55,"pm10":null,"stations":4},{"datetime_utc":"2026-05-28T06:00:00Z","aqi":15,"aqi_min":12,"aqi_max":18,"pm25":3.63,"pm10":null,"stations":3},{"datetime_utc":"2026-05-28T07:00:00Z","aqi":16,"aqi_min":15,"aqi_max":17,"pm25":3.75,"pm10":null,"stations":2},{"datetime_utc":"2026-05-28T08:00:00Z","aqi":22,"aqi_min":15,"aqi_max":34,"pm25":5.23,"pm10":null,"stations":3},{"datetime_utc":"2026-05-28T09:00:00Z","aqi":18,"aqi_min":8,"aqi_max":32,"pm25":4.28,"pm10":null,"stations":4},{"datetime_utc":"2026-05-28T10:00:00Z","aqi":17,"aqi_min":11,"aqi_max":25,"pm25":4.07,"pm10":null,"stations":4},{"datetime_utc":"2026-05-28T11:00:00Z","aqi":16,"aqi_min":15,"aqi_max":17,"pm25":3.92,"pm10":null,"stations":2},{"datetime_utc":"2026-05-28T12:00:00Z","aqi":27,"aqi_min":16,"aqi_max":34,"pm25":6.54,"pm10":null,"stations":8},{"datetime_utc":"2026-05-28T13:00:00Z","aqi":18,"aqi_min":17,"aqi_max":19,"pm25":4.25,"pm10":null,"stations":2},{"datetime_utc":"2026-05-28T14:00:00Z","aqi":18,"aqi_min":17,"aqi_max":20,"pm25":4.4,"pm10":null,"stations":2},{"datetime_utc":"2026-05-28T15:00:00Z","aqi":20,"aqi_min":18,"aqi_max":22,"pm25":4.84,"pm10":null,"stations":3},{"datetime_utc":"2026-05-28T16:00:00Z","aqi":31,"aqi_min":18,"aqi_max":56,"pm25":7.38,"pm10":null,"stations":4},{"datetime_utc":"2026-05-28T17:00:00Z","aqi":20,"aqi_min":17,"aqi_max":22,"pm25":4.68,"pm10":null,"stations":2},{"datetime_utc":"2026-05-28T18:00:00Z","aqi":16,"aqi_min":10,"aqi_max":22,"pm25":3.91,"pm10":null,"stations":3},{"datetime_utc":"2026-05-28T19:00:00Z","aqi":20,"aqi_min":16,"aqi_max":23,"pm25":4.67,"pm10":null,"stations":2},{"datetime_utc":"2026-05-28T20:00:00Z","aqi":22,"aqi_min":15,"aqi_max":27,"pm25":5.16,"pm10":null,"stations":3},{"datetime_utc":"2026-05-28T21:00:00Z","aqi":29,"aqi_min":17,"aqi_max":37,"pm25":6.96,"pm10":null,"stations":8},{"datetime_utc":"2026-05-28T23:00:00Z","aqi":16,"aqi_min":16,"aqi_max":16,"pm25":3.93,"pm10":null,"stations":2},{"datetime_utc":"2026-05-29T00:00:00Z","aqi":22,"aqi_min":17,"aqi_max":32,"pm25":5.33,"pm10":null,"stations":3},{"datetime_utc":"2026-05-29T01:00:00Z","aqi":17,"aqi_min":16,"aqi_max":17,"pm25":3.99,"pm10":null,"stations":2},{"datetime_utc":"2026-05-29T02:00:00Z","aqi":11,"aqi_min":2,"aqi_max":16,"pm25":2.62,"pm10":null,"stations":3},{"datetime_utc":"2026-05-29T03:00:00Z","aqi":15,"aqi_min":15,"aqi_max":15,"pm25":3.52,"pm10":null,"stations":2},{"datetime_utc":"2026-05-29T04:00:00Z","aqi":14,"aqi_min":14,"aqi_max":14,"pm25":3.36,"pm10":null,"stations":2},{"datetime_utc":"2026-05-29T05:00:00Z","aqi":14,"aqi_min":14,"aqi_max":14,"pm25":3.32,"pm10":null,"stations":2},{"datetime_utc":"2026-05-29T06:00:00Z","aqi":34,"aqi_min":14,"aqi_max":86,"pm25":8.23,"pm10":null,"stations":7},{"datetime_utc":"2026-05-29T07:00:00Z","aqi":14,"aqi_min":11,"aqi_max":16,"pm25":3.36,"pm10":null,"stations":3},{"datetime_utc":"2026-05-29T08:00:00Z","aqi":16,"aqi_min":15,"aqi_max":18,"pm25":3.88,"pm10":null,"stations":2},{"datetime_utc":"2026-05-29T09:00:00Z","aqi":17,"aqi_min":15,"aqi_max":18,"pm25":4.04,"pm10":null,"stations":4},{"datetime_utc":"2026-05-29T10:00:00Z","aqi":15,"aqi_min":10,"aqi_max":19,"pm25":3.57,"pm10":null,"stations":4},{"datetime_utc":"2026-05-29T11:00:00Z","aqi":16,"aqi_min":15,"aqi_max":18,"pm25":3.93,"pm10":null,"stations":2},{"datetime_utc":"2026-05-29T12:00:00Z","aqi":17,"aqi_min":16,"aqi_max":18,"pm25":4.0,"pm10":null,"stations":2},{"datetime_utc":"2026-05-29T13:00:00Z","aqi":33,"aqi_min":16,"aqi_max":65,"pm25":7.86,"pm10":null,"stations":8},{"datetime_utc":"2026-05-29T14:00:00Z","aqi":22,"aqi_min":17,"aqi_max":30,"pm25":5.27,"pm10":null,"stations":3},{"datetime_utc":"2026-05-29T15:00:00Z","aqi":19,"aqi_min":18,"aqi_max":21,"pm25":4.63,"pm10":null,"stations":2},{"datetime_utc":"2026-05-29T16:00:00Z","aqi":24,"aqi_min":18,"aqi_max":33,"pm25":5.74,"pm10":null,"stations":3},{"datetime_utc":"2026-05-29T17:00:00Z","aqi":28,"aqi_min":18,"aqi_max":39,"pm25":6.56,"pm10":null,"stations":4},{"datetime_utc":"2026-05-29T18:00:00Z","aqi":20,"aqi_min":18,"aqi_max":21,"pm25":4.72,"pm10":null,"stations":2},{"datetime_utc":"2026-05-29T19:00:00Z","aqi":20,"aqi_min":19,"aqi_max":22,"pm25":4.88,"pm10":null,"stations":2},{"datetime_utc":"2026-05-29T20:00:00Z","aqi":22,"aqi_min":20,"aqi_max":24,"pm25":5.17,"pm10":null,"stations":2},{"datetime_utc":"2026-05-29T21:00:00Z","aqi":26,"aqi_min":20,"aqi_max":32,"pm25":6.28,"pm10":null,"stations":3},{"datetime_utc":"2026-05-29T22:00:00Z","aqi":30,"aqi_min":22,"aqi_max":48,"pm25":7.08,"pm10":null,"stations":7},{"datetime_utc":"2026-05-29T23:00:00Z","aqi":31,"aqi_min":23,"aqi_max":39,"pm25":7.42,"pm10":null,"stations":6}],"daily":[{"date":"2026-05-28","aqi_avg":22,"aqi_min":15,"aqi_max":33,"aqi_color":"#059669","aqi_label":"Good","pm25_avg":5.2,"pm10_avg":null,"hours":21,"stations_avg":3},{"date":"2026-05-29","aqi_avg":21,"aqi_min":11,"aqi_max":34,"aqi_color":"#059669","aqi_label":"Good","pm25_avg":4.9,"pm10_avg":null,"hours":24,"stations_avg":3}]}