Mount Washington Observatory

The Mount Washington Observatory is a private, non-profit organization aiming to advance the understanding of Earth's weather and climate. We achieve this through weather operations, research and product testing, and educational outreach.

In the northeastern United States, a unique combination of topography, geography, and geology creates one of the world’s most extreme environments – the summit of Mount Washington. Nowhere else on Earth experiences such consistent sub-zero temperatures, hurricane-force winds, freezing fog, and driving snow. These extreme conditions have earned Mount Washington the title, “Home of the World’s Worst Weather”.