A monitoring system for monitoring an environmental condition of an area through the measurement of a corresponding environmental quantity, the system comprising: - a static monitoring section comprising a plurality of static sensor units, each static sensor unit being configured to collect first measure data relating to the environmental quantity in a respective portion of the area according to first predetermined scheduled routines during a standard environmental condition; - a mobile monitoring section comprising at least one robot, each one of said at least one robot being configured to move itself within the area and being configured to collect second measure data relating to the environmental quantity in a portion of the area surrounding the at least one robot itself according to second predetermined scheduled routines during the standard environmental condition, and - a central unit in communication relationships with the static sensor units and the at least one robot for receiving the first measure data and the second measure data and assessing the environmental condition of the area based on at least one between the received first and second measure data, the central unit being configured to perform at least one between: - conditioned to the assessing of an anomalous environmental condition from first measure data collected by at least one static sensor unit, commanding at least one robot to operate according to anomaly routines under the control of the central unit, and - conditioned to the assessing of an anomalous environmental condition from second measure data collected by at least one robot, commanding at least one static sensor unit to operate according to anomaly routines under the control of the central unit, wherein each robot is configured to autonomously wander within the area when operating according to the second predetermined scheduled routines during the standard environmental condition. - a static monitoring section comprising a plurality of static sensor units, each static sensor unit being configured to collect first measure data relating to the environmental quantity in a respective portion of the area according to first predetermined scheduled routines during a standard environmental condition; - a mobile monitoring section comprising at least one robot, each one of said at least one robot being configured to move itself within the area and being configured to collect second measure data relating to the environmental quantity in a portion of the area surrounding the at least one robot itself according to second predetermined scheduled routines during the standard environmental condition, and - a central unit in communication relationships with the static sensor units and the at least one robot for receiving the first measure data and the second measure data and assessing the environmental condition of the area based on at least one between the received first and second measure data, the central unit being configured to perform at least one between: - conditioned to the assessing of an anomalous environmental condition from first measure data collected by at least one static sensor unit, commanding at least one robot to operate according to anomaly routines under the control of the central unit, and - conditioned to the assessing of an anomalous environmental condition from second measure data collected by at least one robot, commanding at least one static sensor unit to operate according to anomaly routines under the control of the central unit, wherein each robot is configured to autonomously wander within the area when operating according to the second predetermined scheduled routines during the standard environmental condition.