Here's what to know. Last June, smoke from Canadian wildfires covered New York City in an orange haze and caused Detroit, Washington D.C., and New York City to rank among the cities with the worst ...

The air quality index measures PM2.5, less than 2.5 microns particles, to determine the intensity of air pollution in cities.

Millions of people were under air-quality alerts Monday as smoke from Canadian wildfires drifted into the U.S. again, and several states were under an excessive heat warning. Photo: Amr Alfiky/Reuters ...

national TV news networks have not consistently connected the Canadian wildfire smoke currently blanketing large swaths of the American East Coast to the climate crisis. A review by Media Matters ...

The Washington State Wine Commission hosted a talk Wednesday highlighting research into how wineries around the state can fight the impacts of wildfire smoke on wine grapes. The issue of “smoke ...

D.C. firefighters and emergency responders on Monday returned to the scene of two deadly fires that occurred within nine hours of each other and barely a half mile apart over the weekend.

Air quality in Western Pennsylvania dropped to unhealthy levels Wednesday and could remain that way until at least Sunday as smoke from Canadian wildfires ... and 168 in Washington, D.C ...

The experiments, conducted between 2022 and 2024, involved subjecting rats and mice to “extreme heat exposures,” simulated wildfire ... in smoke,” an EPA spokesperson told the Washington ...