Method and apparatus for processing access point (AP) crowdsourcing data are disclosed. In one embodiment, the method comprises receiving WiFi scan lists and their corresponding location descriptions, consolidating the WiFi scan lists and their corresponding location descriptions based at least in part on a set of selection criteria to generate a WiFi AP record, and uploading the WiFi AP record to a crowdsourcing server. The method consolidating the WiFi scan lists and their corresponding location descriptions comprises quantizing data received in accordance with time segment of the WiFi scan lists and their corresponding location descriptions. The set of selection criteria comprises a maximum number of scan lists to be uploaded in a predetermined period of time, a maximum number of scan lists to be uploaded in a single upload, ratio of MNoO to remaining unprocessed observations, similarity between scan lists, and comparison of HEPE values between similar scan lists.