PurpleAir Blog | Making Air Quality Accessible For All
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Understanding Air Quality - Criteria Air Pollutants and More
Air quality is a hot-button topic in today's world, as many people are understandably concerned about what they're breathing in. -
What is Temperature Inversion?
Have you ever seen smog linger over a city? Well, this can be caused by pollution that becomes trapped in the lowest level of the atmosphere, creating air quality and visibility problems. The common name for this mixture of pollutants is smog. But how does this pollution become trapped in the first place? -
What Air Exchange Rate is & And Why It Matters
We often don't think about it, but every day millions of cubic feet of outdoor air cycle through our homes and offices. Learn how the air exchange rate affects indoor air quality and how to improve it in your own home or workplace. -
10 Air Quality Terms You Need to Know
When it comes to air quality, there can be a lot of technical terms and jargon you need to know. As with any science, it’s important to define these terms so we all have the same understanding and language when we communicate. Learn about important air quality terms in this article.
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Tracking Particulate Matter: Federal Reference Method (FRM) or Federal Equivalent Method (FEM)?
With growing awareness of the potential impacts and effects of air pollution, federal agencies are strapping down and taking more diligent measures to track ambient particle concentrations. The US Environmental Protection Agency (EPA) is constantly redefining safe parameters of the national ambient air quality standards (NAAQS). One of the most concerning airborne pollutants tracked is fine particulate matter, particularly Particulate Matter 2.5 (PM2.5).
