St Catharines, ON Current Weather

How long will it last? Minimal improvement in Ontario's air quality Thursday

Landscape left smouldering by northwestern Ontario wildfire

Massive asteroid flyby of Earth will be visible to billions of people. Here's when

Flames engulf halted Ontario train with workers inside

Lake that provides power to millions falls dangerously low

At what air quality index level should you stay indoors?

Latest El Niño update shows stunning growth

DIY: Make a wildfire smoke filter with these simple steps

Critical weather satellite returning to duty after major malfunction

What happens when Arctic sea ice disappears?

Ontario's AQHI is soaring. Here's what the numbers mean

Not just air quality, wildfire smoke impacts water, too

CN workers in viral video of wildfire train cab got out safely, railway says

Toronto shocked by pale, orange sky as smoke invades the city

Feral hogs could complicate issues to contain invasive, flesh-eating parasite

This familiar but invasive plant can take over in the heat

Experts are warning Canadians that another tickborne illness is on the rise

Tick bite sends Canadian to the ER, but not for Lyme disease

PHOTOS: Blanket of wildfire smoke creates eerie skies across Canada

Looking back at the 2021 Barrie tornado with firsthand accounts

Five years gone: July 15 marks day of Barrie's destructive 2021 tornado

Weird 'space balls' found washed up on a beach, what are they?

How to stay safe from the triple threat of wildfires, smoke and extreme heat

Can you blame the heat for slow internet?

Is Canada baking? Here's what the latest drought analysis says

The dos and don'ts of having a rain barrel

Beating the heat with a fan? It may not be as effective as you think

Rare EF-0 captured on camera on Prince Edward Island

'Pure excitement': Islanders describe spotting tornado off coast of P.E.I.

Mushrooms in your lawn? What it means and what to do