Near zero visibility as ‘extreme’ fog blankets southern Ontario

A dense fog that started earlier this week is continuing today across southern Ontario.

Environment Canada issued another fog advisory this morning (Dec. 27). The foggy weather has hung over the province since Dec. 24.

Today, Environment Canada predicts “near zero visibility” over some areas of Mississauga, Brampton, Hamilton, Burlington, Oakville and Hamilton.

Visibility is expected to improve for most areas later in the morning, however, fog patches may persist into the afternoon for some locations.

“Visibility may be significantly and suddenly reduced to near zero,” Environment Canada says in the advisory. “Travel is expected to be hazardous due to reduced visibility in some locations.”

Hamilton Police notes the “extreme fog” continues to blanket the city and suggests several safety tips.

Reduce speed, use low-beam headlights, plan ahead and maintain a safe distance between vehicles, Hamilton Police said in a post on X.

Drivers should use fog lights if available and refrain from sudden maneuvers.

For pedestrian safety, police suggested people wear reflective clothing, use crosswalks, and remain vigilant while walking. 

☁️ Fog Advisories expanded once again for another night ☁️

After some improvement over much of southern Ontario today, dense fog returns tonight into Wednesday.

Patchy fog is expected once again on Wednesday night: https://t.co/icY9wgwvfk#ONStorm #ONwx pic.twitter.com/zB7JCz6ll5

— ECCC Weather Ontario (@ECCCWeatherON) December 26, 2023