In order to estimate the security levels in wireless networks which use Wi-Fi technology, a tour by the main avenues in Santiago, Veraguas was made. The inspection was carried out using the WarDriving technique and the NetStumbler tool with the purpose of scanning wireless networks. This was done during 4 weeks, from January to March of 2017. For the analysis of the access points (AP), a security level estimation model is proposed based on the following criteria: Confidentiality, Authentication, Integrity, Availability, and Non-repudiation. These criteria present indicators that allow quantifying them. The results of the estimation of security levels in the W-Fi networks analyzed with the proposed model show that 33% of them are at a "very low" level, 64% are at a "low" level, and 3% show a "very high" level.