Los Angeles has smog and San Francisco has fog and Hawaii has vog. You are looking at a photo over looking Pearl Harbor. If you have really good eyesight you might even be able to see Diamond Head in the middle back part of the photo.
Vog is sulfur dioxide from the volcano that mixes with other gases and emits a type of pollution into the atmosphere. When the winds blow from the Big Island of Hawaii towards Oahu the above photo shows the results. People start complaining of headaches, sinus conditions and coughing.