Smoke from numerous Canadian wildfires is again impacting the Philadelphia region this week, with environmental authorities ...

Forecasters say weak winds have left Canadian wildfire smoke to linger over the U.S. Stronger winds are expected to bring ...

Minnesota summer camps have had to cancel kids activities like capture the flag and horseback riding as they contend with months of poor air quality driven by Canadian wildfires. On Sunday, state ...

Smoke from ongoing Canadian wildfires has led to some of the worst air quality in the world across parts of the U.S.

Air quality alerts were in effect in Iowa, Minnesota, Wisconsin and Michigan, as well as eastern Nebraska and parts of ...

Smoke from more than 700 active wildfires in Canada is once again clouding skies and pushing air quality into dangerous ...

Minneapolis had the fifth worst air quality among 125 cities worldwide on Saturday morning, according to an international air ...