The American Samoa Observatory (SMO) is located in the middle of the South Pacific, about midway between Hawaii and New Zealand. It is characterized by year-round warmth and humidity, lush green mountains, and strong Samoan culture. The observatory is situated on the northeastern tip of Tutuila Island, American Samoa, at Cape Matatula.
The observatory was established in 1974 on a 26.7 acre site. Since its construction, it has survived two major hurricanes, an earthquake, and a tsunami with only minor damage. A staff of 3 operates the facility year round. This observatory has the distinction of obtaining 30% of its daytime power from solar panels.
- Country: American Samoa
- Latitude: 14.2474° South
- Longitude: 170.5644° West
- Elevation: 42.00 masl
- Time Zone: Local Time + 11 hour(s) = UTC
- Contact Name: Marisa Gedney
- Address: NOAA Samoa Observatory
P.O. Box 2568
Pago Pago, Cape Matatula, 96799, American Samoa
- Available datasets
- Summary of ESRL/GMD measurements at American Samoa
- Data visualization
- In-Situ Halocarbon measurements