Detroit is under a Dense Fog Advisory until 10 AM this morning, with visibility significantly reduced. The National Weather Service advises motorists to exercise caution and use low beam headlights. After 8 AM, the fog is expected to dissipate, leading to partly sunny skies and a high of 47°F (8°C). The transition to mild conditions will be short-lived, as rain is forecasted to return overnight, potentially affecting Thursday morning commutes.