Thinking about a personal air pollution sensor? Based on cost and on laboratory and field evaluations by air pollution experts, we recommend the PA-II by PurpleAir (purpleair.com) as the best outdoor ...

Startup PurpleAir makes a living counting dust. Its consumer-level sensors measure particles of dust in air—airborne particulate matter (PM)—using laser particle counters that can count particle sizes ...

Above: The Aeroqual AQY 1 installed at my home in Michigan. Note that this is not an ideal siting--an air quality monitor should be set up in an area free of potential air flow influences of buildings ...

It is all around us, but unless there is a problem, we usually do not concern ourselves with what is in the air that we breathe. In both indoor and outdoor environments, poor air quality can greatly ...

Air pollution caused drastic effects not only to the environment but also to human health. Recently, it has become one of the world's biggest public health issues with many countries reporting toxic ...

Salt Lake Valley’s west-siders expect bad air. Winter inversions hit them harder than the east, with historic redlining exacerbating the issue. But how much do hazy conditions outside affect the air ...

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 ...

When sitting in traffic in your car, it’s easy to feel safe and distant from the world outside. Cocooned in a metal shell, protected from what’s on the other side of body panels and glass. But there’s ...