Environment Canada has issued a fog advisory for Toronto this Sunday morning. Fog formed overnight reducing visibility to near zero in some areas. Careful motoring is still possible in South Bayview but perhaps not down the Bayview extension. EC recommends drivers turn on their car lights and maintain a safe distance from other vehicles. Temperatures are expected to reach a high of 10 C with a 70 per cent chance of showers. In the evening temperatures will dip to 6 C. The average temperature is around 3 C. The fog is expected to clear in the afternoon.