Fog Advisory

Fog is expected to redevelop over Southwestern Ontario for this evening and into Tuesday morning. Some areas will have near zero visibilities in dense fog beginning this evening. In addition, untreated roads could become icy as the temperature drops to near freezing overnight. Fog is expected to lift Tuesday morning as the wind picks up from the south. Visibility may be significantly and suddenly reduced to near zero. If travelling, be prepared for areas of near zero visibility. Weather Advisories for fog are issued when near zero visibilities in fog are expected or occurring. Environment Canada meteorologists will update alerts as required. Please monitor local media or Weatheradio. To report severe weather, send an email to or tweet reports to #ONStorm. Find out more ›

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