Dense Fog Advisory Issued for Vaughan, Richmond Hill, and Markham

This report by Farshad Fazaeli is based on information published by Environment and Climate Change Canada.

Environment and Climate Change Canada has issued a Yellow Advisory for fog, impacting Vaughan, Richmond Hill, and Markham. The advisory, issued at 5:15 AM EDT on Thursday, October 29, 2026, indicates a moderate impact level with high forecast confidence. Residents in the affected areas should anticipate near-zero visibility due to dense fog this morning.

The weather agency warns that areas of dense fog will significantly affect the region throughout the morning hours. This condition is expected to make travel hazardous in some locations, as visibility may be suddenly reduced at times. Motorists and pedestrians are advised to be prepared for these challenging conditions and to allow extra time to reach their destinations safely.

Environment and Climate Change Canada urges the public to continue monitoring alerts and forecasts as they are issued. For those who encounter severe weather conditions, the agency provides channels for reporting. Individuals can send an email to ONstorm@ec.gc.ca or post reports on social media using the hashtag #ONStorm. This allows the agency to gather real-time information and update advisories as necessary.

The advisory also notes that there may be temporary inaccuracies in time information displayed on the Environment and Climate Change Canada website due to recent time zone changes in some provinces and territories. However, the content of all alerts and forecasts, including this fog advisory, remains accurate. The agency is actively working to update its systems to reflect these changes and appreciates the public's patience during this transition. Users are also encouraged to ensure their web browsers are up to date for optimal website functionality.

This Yellow Advisory is specifically in effect for the areas of Vaughan, Richmond Hill, and Markham. The primary concern is the sudden reduction in visibility, which can pose significant risks for all forms of travel. Adhering to the advice to allow extra travel time and remain vigilant for changing conditions is crucial for safety during this period of dense fog.

According to Environment and Climate Change Canada. Source: Environment and Climate Change Canada