A system and method for classifying channels in a frequency hopping wireless communication system is provided. A data collection engine operates to obtain channel metrics (30) indicating the level of interference for each channel used by the wireless communication system. A data analysis engine (32) operates to provide a channel map for adaptive frequency hopping (AFH) (26) and/or a channel map for channel avoidance (24). More specifically, the data analysis engine first operates to filter the channel metrics to remove channel metrics indicative of frequency hopping interference. Next, the channels are divided into a number of channel blocks each including at least two adjacent channels. For each channel block, the channel metrics of the channels within the channel block arc combined to provide a metric sum. The data analysis engine then operates to classify each channel as usable or unusable based on the metric sums for each of the channel blocks.