I rode the end of stage 7, from Aliyso (sp?) Canyon road intersection with Angeles Forest back down to La Canada. The roads have been swept and are very clear. LOTS of spectators out, and LOTS and LOTS of folks riding their bikes up to watch. Probably the biggest number of cyclists I’ve ever seen on CA2. Weather is beautiful. Overcast, but still pretty sunny. Warm, but not hot. Should be awesome. Certainly big fanbase out to watch.
EDIT: not Aliso Canyon; Upper Big Tujunga Canyon (I rode down Upper Big Tujunga and then onto the route).