Westsidelife is correct, I worked in the south bay for numerous years off and on thoughout my adult life since the early 80's. More days than not thoughtout the year you can see the downtown skyline from there. I was able to see it from my office, and from the freeway.Usually you can see the skyline and the mountains from that vantage point, even with the high smog levels.
Here are a few photos I took back in January when a few forumers from Ohio, and Chicago came out to visit for a few days. We took them from the same vantage point of the photo anti-cheesehead posted. BTW is was very clear, but as you can see in some of the photos where I zoomed in the photos are a bit more hazy. Its not because it was any smog, but from the zoom on the camera that made it look that way. Just notice the other photos how clear the air was. It was also rather windy and very cold (by southern california standards). Actually even the mid-western forumers found LA during their visit much colder than they thought it would be. Yes LA can get a bit chilly, and enough to even make a snowbird scream its cold (lol).