Multiple U.S. states and Canadian provinces are experiencing poor air quality from wildfire smoke. Here's where.

Hot, dry conditions and strong winds have made it difficult to contain the Cram fire, the largest active wildfire in the state.

At least four firefighters have been injured over the last week while battling three wildfires in Northern California forests that are burning amid extreme heat in steep, bone-dry terrain, fire officials said Monday.

Forest fires have become a common occurrence. In some states, it is not a matter of if, but when, a forest fire will break out each year. Consequently, both local and federal agencies have been looking at alternatives to the traditional ways of preventing and fighting forest fires.

Wildfires have scorched hotspots in several Mediterranean countries this month, with blazes forcing thousands of people into lockdown in Catalonia in Spain, and encroaching on France's second-biggest city of Marseille.

The Chicago area recorded ozone levels of 156 late Monday afternoon. Levels above 100 are considered unhealthy. Residents with respiratory issues, children and the elderly are advised to stay indoors and limit exposure to air outside until Tuesday evening.

"Several other wildfires are still active in Colorado, including the Sowbelly Fire in the Dominguez-Escalante National Conservation Area, the South Rim Fire in Black Canyon of the Gunnison National Park and wildfires in Mesa County," the outlet reported.

The soil surface temperature in areas around Greek capital Athens rose in some places by as much as 10 degrees Celsius since July 2024 after big fires destroyed vegetation, research released on Wednesday by the Athens National Observatory said.