650 AM PDT Fri Apr 19 2019 Ventura County Coast- Including the cities of Ventura, Oxnard, and Camarillo 650 AM PDT Fri Apr 19 2019 .NOW... Areas of dense fog will affect the Ventura County coastal plain through 9 AM this morning. Visibilities of one quarter mile or less can be expected. Commuters are urged to use extra caution and slow down when encountering dense fog.