Focused on the web construction of a content management system, the acquisition, processing，and releasing of surface meteorological observation data for public weather service are introduced. The data layer is the key part of the system, in which the acquired information is processed in aspects of quality control and statistical analysis. The hourly data recoding and storing into the database are conducted while the sequentially updated statistical results for daily/tenday/month/year reports are calculated. Through the timesequence analysis and the 2D GIS graphic analysis, the processed information is visualized and can be inquired by public with different demands. In application, the system works efficiently with the data from 2566 meteorological stations in China and provides services for several public portals.