Area overview - traffic congestion in Corona, Chino Hills, Ontario, Rancho Cucamonga 7:16 a.m.
Traffic is slow on the northbound Highway 71 at Euclid Avenue in Chino Hills, the northbound 15 Freeway at Philadelphia Street in Ontario and the westbound 210 Freeway at Haven Avenue in Rancho Cucamonga. The westbound 91 in Corona is also congested due to commuter traffic.