Environment Canada is warning "near-zero visibility" is possible in Hamilton as dense fog is expected to form tonight. "Visibility will likely be reduced in many areas to less than 250 metres," according to a fog advisory issued Monday afternoon. "Near zero visibility in dense fog is quite possible overnight into Tuesday morning." Commuters are warned to prepare for fog, especially those coming from rural areas. The thick fog is expected to become patchy through Tuesday morning and later lift completely.

Source: CBC News September 10, 2018 19:30 UTC