Blue Hill Observatory is a historic weather observatory located in Milton, Massachusetts. Established in 1885, it is one of the oldest continuously operating weather stations in the United States. The observatory is known for its contributions to meteorology and climate research, providing valuable data for weather forecasting and climate studies. The observatory is situated on Blue Hill, which is part of the Blue Hills Reservation. It features a range of instruments for measuring atmospheric conditions, including temperature, humidity, and wind speed. The data collected at Blue Hill Observatory supports both local and national weather services, enhancing public safety and awareness.