Gas prices have risen 20 cents over the last week, giving California, including Santa Clarita, the most expensive prices in the nation due to planned and unplanned maintenance on refineries, officials said Tuesday. California’s averages reaching $4 a gallon is the highest motorists have seen gas prices in the state since July of 2014, according to officials. Gas prices started ...

The national average for gas prices noticeably rose last week in nearly all of the United States, including the Santa Clarita Valley, according to officials. In a study released by AAA Monday, officials found that national gas prices rose by 8 cents in just one week’s time, leading to the biggest impact to portions of the nation’s West Coast. “Thanks ...