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

Some of the visuals coming out of Los Angeles County over the past week show a vivid pink substance coating streets, cars and plants. This is fire retardant, dropped by aerial firefighting tankers in ...

Researchers have shown that plumes of wildfire smoke can carry contaminants hundreds of kilometers, leaving a toxic and ...

As wildfires ravage Los Angeles, experts answer key questions about how wildfire smoke affects health and how to protect yourself.

Last year, poor air quality from wildfire smoke in Canada spread all the way to New York and many states in northeastern America, posing dangerous threats to health hundreds and thousands of miles ...

But earlier in 2024, multiple states issued air quality warnings as smoke from “out of control” wildfires in Canada blew across ... a pediatrician in Orange County, California, sees more ...

who has been studying the health effects of wildfire smoke for more than 20 years. She was one of Canada’s representatives on the committee, a country racked by wildfires in 2023 – resulting in poor ...