With wildfires burning in North America, it's important ... after breathing polluted air. The map below shows the level of PM 2.5. "Predicting if the air quality will improve or worsen can be ...

Air quality in some parts of the United States is worsening as smoke from dozens of wildfires in Canada travels south, pushed by winds high in the atmosphere. Through parts of Minnesota and into ...

According to the Ontario’s Air Quality Health Index (AQHI), areas that had “high risk” ratings on Friday were Belleville, ...

Wildfire smoke is spreading across North America, threatening air quality across much of Canada ... South Dakota and across the High Plains. Oregon has the largest active blaze in the U.S ...

Saharan dust is rolling through the southeastern U.S. and will make its mark across Texas through late Friday.

Smoke from wildfires burning in Canada, North Dakota and Minnesota is expected to hit the Chicago area Friday, but what will that mean for the region's air quality?

The dust is then transported across the Atlantic and deposited in the Caribbean, Central America ... quality air and sometimes allergy symptoms. Although dust concentrations are not particularly ...