The disclosure relates to method and system for performing real-time monitoring of a container containing a non-gaseous fluid substance. The method includes receiving, from a sensing device installed in the container and by a monitoring device, a dataset corresponding to the container and to a non-gaseous fluid substance in the container. The dataset may be acquired and transmitted by the sensing device at a preconfigured time-interval and may include level data corresponding to a level of the non-gaseous fluid substance in the container, temperature data corresponding to a temperature inside the container, and movement data corresponding to movement of the container or a lid of the container. The method further includes performing, by the monitoring device, a time-series analysis on the dataset for determining an anomaly; and generating, by the monitoring device, a graded alert based on the anomaly.