It's easier than you think, and all you need is an air quality monitor. But what does it even mean to have poor air quality and how would you know that the air quality in your home is bad?

Unfortunately, too often our air is anything but fresh. While air quality varies ... of them in Asia like New Delhi; Dhaka, Bangladesh; Bangkok; and Jakarta, Indonesia — bad air might seem ...

Particulate matter are things like smoke, which we see drift up from fires in Mexico, and Saharan dust, which visits us every year. They’re bad ... the air quality chart. Very rare does San ...