2025年1月17日 · Mount Washington Observatory is a private, nonprofit, member-supported institution with a mission to advance understanding of the natural systems that create Earth’s weather and climate.

Mount Washington Observatory is a private, nonprofit, member-supported institution with a mission to advance understanding of the natural systems that create Earth’s weather and climate.

Mount Washington Observatory is a private, nonprofit, member-supported institution with a mission to advance understanding of the natural systems that create Earth’s weather and climate.

View our live streaming and still-image weather webcams located on Mount Washington in New Hampshire and surrounding mountains. Observatory Deck Webcam A view of the Sherman Adams observation deck at Mount Washington State Park

Mount Washington Observatory is a private, nonprofit, member-supported institution with a mission to advance understanding of the natural systems that create Earth’s weather and climate.

The Mount Washington Observatory was founded in 1932, but the history of weather observation on Mount Washington goes back to the winter of 1870-1871. It was then that the mountain’s summit was first occupied for scientific purposes.

Mount Washington Observatory is a private, nonprofit, member-supported institution with a mission to advance understanding of the natural systems that create Earth’s weather and climate.

Mount Washington Observatory is a private, nonprofit, member-supported institution with a mission to advance understanding of the natural systems that create Earth’s weather and climate.

Help support Mount Washington Observatory by shopping our online store, photo collection, calendars, or Washburn Gallery.

Mount Washington Observatory is a private, nonprofit, member-supported institution with a mission to advance understanding of the natural systems that create Earth’s weather and climate.