Canada’s wildfire season has got off to a dangerous start, with thousands of people forced to flee their homes and blankets of smoke affecting air quality across eastern North America. Following ...

Smoke from Canadian wildfires has begun to reach as far as Europe as the large and intense flames continue to threaten health in North America. The fires have forced more than 27,000 Canadians in ...

Major heat waves across southern Europe have pushed temperatures above 104 degrees Fahrenheit (40 degrees Celsius) in countries including Italy, Spain and Greece, as local authorities issued fresh ...

Europe's continuing heat wave on Wednesday helped fuel a deadly wildfire in Spain while the European Union presented plans to reduce greenhouse gas emissions under scorching temperatures. The ...

It created an enormous thick plume of ash and smoke that reached 14,000 meters (45,000 feet) of altitude, making it the largest registered by firefighters in Catalonia, a northeastern region of Spain.

Surges of wildfire smoke are expected across central and eastern states through the end of the week as winds blow from Canada. Early Wednesday, air quality levels were unhealthy to very unhealthy ...

The air quality index, a scale from 0 to 500, measures how clean or polluted the air is. As smoke reaches the surface, AQI numbers rise, increasing health risks.

Hundreds of firefighters battled a fast-moving wildfire that reached the outskirts of the southern French city of Marseille on Tuesday, forcing people to stay indoors and the nearby airport to close.

Wildfire-related air pollution causes higher mortality rates than non-wildfire PM 2.5 in Europe. Experts debate if prescribed fires reduce the risk or contribute to air pollution.