Fog in Hamilton and nearby areas to clear up Sunday morning and return overnight

Environment Canada has put Hamilton and surrounding areas under a fog advisory on Sunday, but the agency saidit should clear up Sunday morning only to return again overnight.

Hamilton, Burlington, Brantford, Haldimand County, Norfolk County and Niagara Region are all under a fog advisory.

"Near zero visibility in fog is expected or occurring," reads the national weather agency's advisory as of 9:13 a.m., on Sunday.

"Visibility may be significantly and suddenly reduced to near zero."

The advisory says the fog will clear up this morning but doesn't specify when.

Forecast for Sunday and Monday

Hamilton's Sunday forecast calls for a mix of sun and cloud with a high of 26 C during the day.

Sunday night will be partly cloudy with a low of 13 C.

Fog patches will form after midnight, according to Environment Canada.

On Monday Victoria Day the fog should clear up again in the morning.

It'll be sunny with a high of 28 C.

Monday night will see clear skies and a low of 16 C.

Both Sunday and Monday will have very high UV indexes, so make sure you wear sunscreen.

Here's what's open and closed on Monday and a list of things to do this long weekend.