Cobourg, ON Current Weather

Some of the worst air quality in the world sits over Ontario Wednesday

Flames engulf halted Ontario train with workers inside

PHOTOS: Blanket of wildfire smoke creates eerie skies in Ontario and Quebec

Wildfire smoke blankets southern Ontario in a haze

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

At what air quality index level should you stay indoors?

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

Looking back at the 2021 Barrie tornado with firsthand accounts

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

Not just air quality, wildfire smoke impacts water, too

Best practices to keep yourself safe from wildfire smoke

Hazy skies blanket Ontario as wildfire smoke spreads, how long will it last?

Arctic Sea Ice Day: 5 facts about an at-risk, valuable climate asset

This familiar but invasive plant can take over in the heat

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

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

How green spaces can keep urban cities cool in a warming world

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

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

Can you blame the heat for slow internet?

Latest El Niño update shows stunning growth

The do's and don'ts of having a rain barrel

Jeremy Hansen is retiring, but Canada still supports NASA's return to the Moon

Rare EF-0 captured on camera on Prince Edward Island

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

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

Drowning deaths have spiked in this province

Finding holes in your lawn? How to keep damaging skunks at bay

One day, all of Earth's plants will disappear. Scientists think they know when

Tornadoes, heat and flooding continue to hit Prairies