Pick an Interstate to see live conditions the whole way down the road — state by state, exit by exit. Every route carries its real mile markers and exit numbers (an exit number is its milepost), and each interchange links to the local forecast. From I-95 down the East Coast to I-5 up the West.
Three-digit loops and spurs (the same number is reused in different states) and Hawaii’s H-routes — each with every mile marker.