NDBC Latest Observations Service
Delivers a consolidated snapshot of the most recent observation from every active NDBC and partner station, refreshed every five minutes. The flat text file at https://www.ndbc.noaa.gov/data/latest_obs/latest_obs.txt contains 23 columns (station ID, latitude, longitude, UTC timestamp, wind direction and speed, gust, wave height, dominant and average wave period, mean wave direction, atmospheric pressure, pressure tendency, air temperature, water temperature, dew point, visibility, and tide). Per-station RSS files and a geographic observation search RSS feed are also available. No authentication required.