The four circles joined together signify S & T Progress through; Excellence, Relevance, Cooperation and Cost-Effectiveness. The 6 stars are for the major PAGASA Branches and the date 1865 to commemorate the Weather Services as one of the first in Asia. The wind vane and anemometer represent he agency's functions, and the colors (black) represent the Unknown. (white) truth and Enlightenment and (blue) Progress.