Many fires burning across Canada, forcing evacuations and threatening air quality in the United States, cannot simply be put out, authorities and experts say.

While images of wildfires capture their ferocity, data can provide insight into how bad a fire season is. Such is the case with two graphics, powered by satellite data, that showcase a Canadian wildfire season off to a wild — and scary — start.

Canada is facing a wildfire catastrophe of historic proportions. Blazes sweeping across Manitoba, Saskatchewan, and Alberta have forced over 33,000 people to flee their homes, marking one of the largest evacuations in the country’s history.

Parts of central Pennsylvania are under a code orange air quality alert, but the Midwest is seeing bigger air quality problems.

Living in the Midwest means being affected by the Canadian wildfires that occur just about every year. Here is what to know about these wildfires and how they’re affecting the Midwest.

Roughly 17,000 residents in the Canadian province of Manitoba have been evacuated because of nearly two dozen active wildfires, officials said Saturday.

Raging Canadian wildfires have forced evacuations from several mining operations as heat and wind push flames across the resource-rich western provinces.

Wildfires burning in Canada's oil-producing province of Alberta have reduced the country's daily crude production by about 7%. Here is a tally of affected oil production sites so far:

Smoke from wildfires raging in Canada has drifted into the United States, affecting air quality as far south as Florida.

An air quality index of 300 or higher is considered hazardous, and the record-breaking smoke AQI in Grand Portage reached 800 on Tuesday.