It’s a foggy start across the region, and if you’re heading out early, you’ll want to take it easy on the roads. Environment Canada says some areas could see visibility drop to nearly zero before the fog finally starts to lift later this morning. A fog advisory in effect Thursday for Barrie, Collingwood and Hillsdale, with high confidence in the forecast and a moderate impact level. Drivers should be prepared for sudden drops in visibility and give themselves some extra time to get where they’re going, said the national weather agency. The good news is the fog won’t be hanging around for long. Once it clears this morning, sunshine takes over Thursday, with a high of 26 C and a humidex of 30. The UV index will reach 7. Thursday night looks clear with a low of 14 C. Looking ahead to Friday, meteorologists say there’s more sunshine on the way. It will be mainly sunny with a high of 25 C and a humidex of 26. The UV jumps to 8.