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

Even if you don't live in an area where wildfires are typical, it's important to know how to protect your health.

Erin Davis/Axios Visuals Air quality in Salt Lake City is getting worse, according to year-over-year data. Why it matters: Long-term exposure to poor air quality is harmful to our health. By the ...

The Kedah Department of Environment (DOE) has investigated two oil palm plantations in the Kulim district suspected of ...

Toxic chemicals from L.A.'s fires are going under-reported and pose serious long-term risks, a group of lawmakers say. They want the EPA to create a task force.

Toronto has seen the worst air quality of major cities in the world on Wednesday as southern Ontario is blanketed by smoke from wildfires ... the world using the AQI index,” he said.

World Bank Senior Disaster Risk Management Program Specialist Lesley Y. Cordero assured on Friday his full cooperation to Chairman CDA ...

Wildfire smoke poses a unique threat to your health ... These masks are especially important when the Air Quality Index exceeds 101. If you evacuate during a fire, you may feel safe entering ...

Thousands of farmworkers labored in fields in Ventura County, Calif. in late January in wildfire smoke. They have little to ...

Phuket is turning up the heat on environmental offenders with a major new campaign aimed at tackling the island’s air pollution crisis.

But Griselda Ellez, who picks leeks in California’s Ventura County, said she had no option but to continue working, even as ...