Some will waft across a 2,500-mile path that includes the Plains, Midwest and East as dozens of uncontained fires burn across Oregon, Washington and British Columbia.

Wildfire smoke, which is increasing in the Northern Hemisphere as the climate warms, attacks nearly every system in the body.

CLEVELAND, Ohio — If Monday’s hazy sky gave you flashbacks to the wildfire smoke that choked Northeast Ohio earlier this month, you weren’t imagining things. Smoke is again drifting over the region from fires in Canada and the western United States.

Dangerously high amounts of wildfire smoke are drifting through the Boise area — and skies show no signs of clearing soon. As of Tuesday, July 28, the Treasure Valley was experiencing “very unhealthy” air quality due to wildfires burning across Oregon,

Across North America over the last week, as wildfires raging in Minnesota and Ontario released huge plumes of smoke, air quality readings soared far beyond the rating of above 300

ODA only allows field burning when weather conditions promise to lift smoke up and away from populated areas. Co

As public awareness of the steadily increasing number of wildfires — such as the recent Dove Fire in downtown Sonora near Yosemite National Park that has forced mandatory evacuations, and the recent Ontario wildfires that prompted an Air Quality Health Advisory across the Big Apple — continues to rise,

Hundreds of thousands of people, residents as well as vacationers, were forced to evacuate or told to remain indoors.