A method and corresponding system for providing an indication of one or more states of a geographic area. The method includes acquiring sensor data including sensor measurements taken by a plurality of mobile devices at a plurality of locations and acquiring location data corresponding to the plurality of locations of the sensor measurements. At least one processor determines one or more states of a geographic area corresponding to the plurality of locations based on the sensor data, and an indication is provided of the one or more states of the geographic area to a particular user.