Will skies be clear over southern Ontario Tuesday night?
Partly clear skies are likely to appear over many, or most, regions during the evening except for lots of high-level clouds that may or may not be visible as cirrus clouds, and except for low-level humidity that will likely cause fog in many areas. Increasing mid-level cloudiness is expected to move eastward over southern Ontario later in the evening over southwestern regions and probably after midnight near western Lake Ontario.