When it closes
Cajon rarely closes for its elevation alone, but it's a wind, snow, and wildfire funnel. Winter storms occasionally drop snow to the summit and force chain controls. Strong Santa Ana and canyon winds flip trucks. In fire season, blazes in the pass have shut I-15 entirely. The cameras tell you which of those, if any, you're dealing with today.
Does it snow on Cajon Pass?
Occasionally. At about 4,190 feet, Cajon Summit catches snow only in colder storms, but when it does, Caltrans runs chain controls on I-15. Wind and wildfire close it more often than snow.
How high is Cajon Pass?
Cajon Summit on I-15 is about 4,190 feet, between the LA Basin and the High Desert around Victorville.
Where is Cajon Pass?
On I-15 about 55 miles northeast of Los Angeles, on the main route to Las Vegas. Track your mile marker over the grade with the MileCheck app on CarPlay or Android Auto.