This is smoke rising from the recent Pine Fire. The fire, in eastern San Diego county, burned close to 2,200 acres and burned for 5 days before it was 100% contained. The cause of the fire was determined to be an illegal campfire, cost approximately $1.3 million.
Here in Southern California, we are always hyper-aware of fire danger. This year, a particularly dry year, we are holding our collective breaths that we don't have a repeat of the 2003 fires.