Technologies directed to dynamic frequency selection (DFS) avoidance are described. One method stores a timestamp and a first amount of time operating on a channel for each historical radar event detected in a wireless local area network. The method determines a first score using a first weighting factor based on the first amount of time and a second weighting factor based on a second amount of time since the respective historical radar event. The method determines a second score for a first DFS channel by summing the first score for each historical radar event that occurred on the first DFS channel. The method determines a third score for a second DFS channel by summing scores of events occurring on the second DFS channel. The method selects the first DFS channel based on at least the second score and the third score for sending second data to a second device.