Websan diego (/ ˌ s æ n d iː ˈ eɪ ɡ oʊ /) is the second largest city in the u. s. State of california and eighth largest in the united states. It is at the southwest corner of california, as well. Web10 hours ago · san diego — the northern lights were seen in skies across san diego county on thursday, caused by a severe geomagnetic storm. While the northern lights. Websep 6, 2024 · the best things to do in san diego, california, include exploring balboa park, eating authentic mexican food in old town, and relaxing on the shores of la jolla.