The article describes the principles for development of information services for disaster monitoring and forecasting within the Multipurpose Aerospace System for Forecasting Monitoring (MAKSM) of Natural and Man-Caused Disasters in Russia and the Commonwealth of Independent States in the context of the MAKSM main target tasks at the initial stage of its development and with reference to the status and functions of information services in the system. It defines the target tasks addressed by the services to implement the main information conversion of estimates of disaster precursor parameters into parameters of disaster forecasts. The article explains the geo-integration functional for communication of the services with monitoring data sources and the functional for thematic processing, data storage and presentation of forecast results to consumers. The authors describe implementation patterns of the geo-information functional of the services at the current stage of remote monitoring system development.