Westbound I-84 is slowed between Star Road and Northside Boulevard, with motorists experiencing stop-and-go traffic.
In Meridian, slow spots stretch from Cloverdale Road to Locust Grove Road in the westbound lanes.
Stop-and-go traffic on Eagle Road between Chinden Boulevard and State Street is slowing drivers headed north.
Cars traveling east near the Boise Airport are experiencing congestion as well.
All other roads appear clear. No crashes have been reported as of 8:30 a.m.