The 1st Weather Reconnaissance Squadron is an inactive United States Army Air Force unit. It saw service between April 1943 and May 1945. On 21 December the squadron was inactivated at Grenier Field, New Hampshire. The 1st Weather Reconnaissance Squadron was formed to gather weather data for the North Atlantic ferry routes, particularly the segments over the ocean. This data was used to provide forecasts for the safe passage of aircraft flying between North America and Britain. It became operational in April 1943 and operated throughout the North Atlantic region.