Air Quality Index, or AQI, and PM2.5, particulate matter which measures 2.5 micrometers or less, are not the same thing. But both do refer to how polluted the air is, just in different ways. AQI, an ...

There has been a lot of talk about air quality levels as nearly the entire tri-state area has been engulfed by smoke coming down from wildfires in Canada. But what do all the numbers actually mean?

Health Dangers of Air Pollution: Particulate Matter (PM) 2.5 and PM10 stand are tiny particles suspended in the air with sizes smaller than 2.5 microns and 10 microns, respectively. It is a ...

Thousands of residents across parts of California, Nevada, Oregon, and South Dakota have been advised to stay indoors, as ...

The Environmental Protection Agency’s emission factor resource, AP-42, is not your only option for developing particulate matter (PM) emission rates. Results of a prominent PM emissions measurement ...