Environment Canada issued a fog advisory for Waterloo, Ontario, on the morning of March 4, 2026, as thick fog causes near-zero visibility and hazardous driving conditions for residents in Kitchener and Cambridge.
The weather alert is listed as a yellow advisory under the national colour-coded system. This level indicates weather that may cause moderate disruptions but is typically localized or short-term in nature.
Motorists are being told to take safety steps while travelling through the dense fog. The agency recommends that drivers slow down, turn on their vehicle lights, and maintain a safe following distance from other cars on the road.
The advisory was officially put in place at 5:08 a.m. as conditions worsened across the region. These hazardous travel conditions are expected to remain throughout the morning commute.
