The likelihood of seeing the Northern Lights in Ontario is rated by the Kp-index, with 0 being low and 9 being high. One needs to have a Kp-index of at least 4 to go on an aurora hunt. Both strength and location of disturbance are considered while rating the Kp-index. Choosing a location with minimal light pollution and monitoring the index can increase the chances of viewing aurora borealis. Show more