Environment Canada is warning that areas of dense fog have developed in southwestern and southcentral Ontario Monday morning.

Visibility could be reduced to 200 metres or less, according to the agency.

Motorists are urged to use extra caution.

The fog is expected to persist until mid-morning.

Special weather statement for:

  • Windsor – Essex – Chatham-Kent
  • Sarnia – Lambton
  • Elgin
  • London – Middlesex
  • Simcoe – Delhi – Norfolk
  • Dunnville – Caledonia – Haldimand
  • Oxford – Brant
  • City of Hamilton
  • Halton – Peel
  • York – Durham
  • Huron – Perth
  • Waterloo – Wellington
  • Dufferin – Innisfil
  • Grey – Bruce
  • Barrie – Orillia – Midland