{"city":"Marlborough","country":"United States","lat":42.34592819213867,"lon":-71.55229187011719,"range":"48h","license":"CC BY 4.0","source":"https://cerns.io","hourly":[{"datetime_utc":"2026-05-28T09:00:00Z","aqi":25,"aqi_min":14,"aqi_max":39,"pm25":6.08,"pm10":null,"stations":7},{"datetime_utc":"2026-05-28T10:00:00Z","aqi":25,"aqi_min":15,"aqi_max":32,"pm25":5.99,"pm10":null,"stations":11},{"datetime_utc":"2026-05-28T11:00:00Z","aqi":20,"aqi_min":11,"aqi_max":29,"pm25":4.82,"pm10":null,"stations":7},{"datetime_utc":"2026-05-28T12:00:00Z","aqi":23,"aqi_min":16,"aqi_max":34,"pm25":5.56,"pm10":null,"stations":6},{"datetime_utc":"2026-05-28T13:00:00Z","aqi":31,"aqi_min":17,"aqi_max":52,"pm25":7.37,"pm10":null,"stations":4},{"datetime_utc":"2026-05-28T14:00:00Z","aqi":21,"aqi_min":17,"aqi_max":26,"pm25":5.02,"pm10":null,"stations":4},{"datetime_utc":"2026-05-28T15:00:00Z","aqi":23,"aqi_min":18,"aqi_max":27,"pm25":5.51,"pm10":null,"stations":9},{"datetime_utc":"2026-05-28T16:00:00Z","aqi":28,"aqi_min":12,"aqi_max":56,"pm25":6.57,"pm10":null,"stations":11},{"datetime_utc":"2026-05-28T17:00:00Z","aqi":25,"aqi_min":13,"aqi_max":41,"pm25":5.95,"pm10":null,"stations":9},{"datetime_utc":"2026-05-28T18:00:00Z","aqi":22,"aqi_min":10,"aqi_max":31,"pm25":5.23,"pm10":null,"stations":6},{"datetime_utc":"2026-05-28T19:00:00Z","aqi":25,"aqi_min":16,"aqi_max":30,"pm25":6.02,"pm10":null,"stations":9},{"datetime_utc":"2026-05-28T20:00:00Z","aqi":24,"aqi_min":15,"aqi_max":30,"pm25":5.83,"pm10":null,"stations":12},{"datetime_utc":"2026-05-28T21:00:00Z","aqi":32,"aqi_min":27,"aqi_max":52,"pm25":7.7,"pm10":null,"stations":6},{"datetime_utc":"2026-05-28T22:00:00Z","aqi":40,"aqi_min":33,"aqi_max":61,"pm25":9.57,"pm10":null,"stations":6},{"datetime_utc":"2026-05-28T23:00:00Z","aqi":22,"aqi_min":16,"aqi_max":27,"pm25":5.21,"pm10":null,"stations":4},{"datetime_utc":"2026-05-29T00:00:00Z","aqi":35,"aqi_min":17,"aqi_max":63,"pm25":8.31,"pm10":null,"stations":6},{"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":15,"aqi_min":15,"aqi_max":16,"pm25":3.69,"pm10":null,"stations":2},{"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":17,"aqi_min":9,"aqi_max":21,"pm25":3.99,"pm10":null,"stations":9},{"datetime_utc":"2026-05-29T06:00:00Z","aqi":19,"aqi_min":2,"aqi_max":44,"pm25":4.57,"pm10":null,"stations":6},{"datetime_utc":"2026-05-29T07:00:00Z","aqi":18,"aqi_min":15,"aqi_max":21,"pm25":4.16,"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":16,"aqi_min":15,"aqi_max":18,"pm25":3.92,"pm10":null,"stations":4},{"datetime_utc":"2026-05-29T10:00:00Z","aqi":16,"aqi_min":6,"aqi_max":29,"pm25":3.77,"pm10":null,"stations":9},{"datetime_utc":"2026-05-29T11:00:00Z","aqi":17,"aqi_min":15,"aqi_max":18,"pm25":4.01,"pm10":null,"stations":4},{"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":26,"aqi_min":16,"aqi_max":43,"pm25":6.24,"pm10":null,"stations":4},{"datetime_utc":"2026-05-29T14:00:00Z","aqi":26,"aqi_min":17,"aqi_max":33,"pm25":6.27,"pm10":null,"stations":7},{"datetime_utc":"2026-05-29T15:00:00Z","aqi":25,"aqi_min":18,"aqi_max":31,"pm25":5.86,"pm10":null,"stations":4},{"datetime_utc":"2026-05-29T16:00:00Z","aqi":29,"aqi_min":18,"aqi_max":37,"pm25":6.91,"pm10":null,"stations":6},{"datetime_utc":"2026-05-29T17:00:00Z","aqi":28,"aqi_min":18,"aqi_max":39,"pm25":6.64,"pm10":null,"stations":11},{"datetime_utc":"2026-05-29T18:00:00Z","aqi":25,"aqi_min":18,"aqi_max":32,"pm25":6.13,"pm10":null,"stations":6},{"datetime_utc":"2026-05-29T19:00:00Z","aqi":26,"aqi_min":19,"aqi_max":30,"pm25":6.26,"pm10":null,"stations":8},{"datetime_utc":"2026-05-29T20:00:00Z","aqi":25,"aqi_min":20,"aqi_max":30,"pm25":6.04,"pm10":null,"stations":6},{"datetime_utc":"2026-05-29T21:00:00Z","aqi":33,"aqi_min":20,"aqi_max":52,"pm25":7.85,"pm10":null,"stations":4},{"datetime_utc":"2026-05-29T22:00:00Z","aqi":40,"aqi_min":22,"aqi_max":55,"pm25":9.63,"pm10":null,"stations":11},{"datetime_utc":"2026-05-29T23:00:00Z","aqi":28,"aqi_min":17,"aqi_max":38,"pm25":6.6,"pm10":null,"stations":7},{"datetime_utc":"2026-05-30T00:00:00Z","aqi":26,"aqi_min":23,"aqi_max":33,"pm25":6.28,"pm10":null,"stations":4},{"datetime_utc":"2026-05-30T01:00:00Z","aqi":32,"aqi_min":23,"aqi_max":39,"pm25":7.7,"pm10":null,"stations":3},{"datetime_utc":"2026-05-30T02:00:00Z","aqi":32,"aqi_min":22,"aqi_max":52,"pm25":7.82,"pm10":null,"stations":4},{"datetime_utc":"2026-05-30T03:00:00Z","aqi":37,"aqi_min":22,"aqi_max":49,"pm25":8.87,"pm10":null,"stations":5},{"datetime_utc":"2026-05-30T04:00:00Z","aqi":44,"aqi_min":21,"aqi_max":65,"pm25":10.5,"pm10":null,"stations":6},{"datetime_utc":"2026-05-30T05:00:00Z","aqi":25,"aqi_min":2,"aqi_max":37,"pm25":6.08,"pm10":null,"stations":8},{"datetime_utc":"2026-05-30T06:00:00Z","aqi":26,"aqi_min":22,"aqi_max":33,"pm25":6.27,"pm10":null,"stations":7}],"daily":[{"date":"2026-05-28","aqi_avg":26,"aqi_min":20,"aqi_max":40,"aqi_color":"#059669","aqi_label":"Good","pm25_avg":6.2,"pm10_avg":null,"hours":15,"stations_avg":7},{"date":"2026-05-29","aqi_avg":23,"aqi_min":14,"aqi_max":40,"aqi_color":"#059669","aqi_label":"Good","pm25_avg":5.4,"pm10_avg":null,"hours":24,"stations_avg":5},{"date":"2026-05-30","aqi_avg":32,"aqi_min":25,"aqi_max":44,"aqi_color":"#059669","aqi_label":"Good","pm25_avg":7.6,"pm10_avg":null,"hours":7,"stations_avg":5}]}