The pull of the foul air to Northern California was significant enough that the Bay Area Air District issued an air quality advisory. According to AirNow, a federal air-quality measuring app that measures air quality in real time, the air quality at 2 p.m. through much of the region was only moderately healthy.

Smoke from raging wildfires in Canada is worsening air quality in some U.S. states. But will Greater Cincinnati be affected? Here's what we know.

Wildfires burning in Canada's oil-producing province of Alberta have affected more than 344,000 barrels per day of oil sands production, or about 7% of the country's overall crude oil output, according to Reuters calculations.

Smoke from wildfires in Canada is making it harder to breathe in Ohio and several other states. Here's how long it will last and what else we know.

A series of wildfires burning across central Canada sent smoke billowing into the U.S. over the weekend, with few signs that the blazes will subside anytime soon.

Oil prices climbed nearly 3% on Monday on supply concerns as producer group OPEC+ decided not to accelerate plans to hike output and wildfires in Canada's oil-producing province disrupted production.

Canada wildfires continue to burn, and smoke from the Canadian fires may affect U.S. air quality in several states. Is Kentucky impacted? What we know

States across the border issued air advisories about particulate pollution that are expected to last for several days.

Rising heat, winds, and dry air sparked blazes in the Canadian provinces of Saskatchewan and Manitoba, according to the country’s Department of Natural Resources. Residents in the United States are expected to face poor air quality from the fires as soon as May 30.

A dozen P.E.I. firefighters have been deployed to help fight the wildfires disrupting communities in Saskatchewan and Manitoba.