Beijing Live Air Quality

Beijing Air Quality – Live Beijing, China AQI and PM2.5 Readings Beijing PM2.5 air quality averaged 34.2 micrograms in 2021. This means Beijing PM2.5 concentrations exceeded the WHO annual limit of 5.0 micrograms by a little under 7 times. On the most polluted day, Beijing air quality exceeded the recommended …

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7 Myths About Air Pollution

Air pollution kills thousands of people every day. But due to pollution being a “silent” killer, most do not grasp how much pollution affects our health. In this article, we’ll debunk seven air pollution myths. Myth #1: Breathing polluted air makes you immune to it This is a common misconception …

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How Air Pollution Affects Your Mood

Air pollution affects nearly every organ in our body, but did you know air pollution affects your mood too? Research shows direct correlations between air pollution and a bad mood. PM2.5 Air Pollution Worsens Mood Researchers at MIT studied how air pollution affects mood across 144 cities in China. Using …

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Where Does India’s Air Pollution Come From?

In our 2022 25 most polluted cities report, 9 Indian cities made the list. So where does India’s air pollution come from? Let’s dive into to see what the sources are of India’s serious air pollution. Sources of India’s Air Pollution: By Industry A study undertaken by Council on Energy, …

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Air Purifiers Help Treat Sleep Apnea? A CPAP Alternative?

The effects of air pollution on our health are well documented. But the effect air pollution has on sleep and making sleep apnea worse is not talked about enough. So what exactly is air pollution’s effect on sleep apnea? Can an air purifier be used as a CPAP alternative? Air …

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Calculating CADR with airflow and filtration %

How to Calculate CADR From an Air Purifier’s Airflow

CADR tests, used to calculate an air purifier’s effectiveness at cleaning air, are typically used to compare the performance of different purifiers. However, performing a CADR test is not simple: it requires a particle monitor, a sealed 30m3 test lab, and tightly controlled testing conditions. As such, a shortcut to …

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What’s CADR and What’s the Difference With Airflow?

When buying an air purifiers, the terms ‘airflow’ and CADR are often used interchangeably to describe an air purifier’s performance. But what’s the difference between CADR (clean air delivery rate) and airflow? Are they the same thing? Or which one – CADR vs. airflow – should be used when buying …

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corsi rosenthal box

Corsi-Rosenthal Box DIY Purifier: 4 Things to Know

A fan, furnace filters, and some duct tape–can air purifiers be that simple? Meet the Corsi-Rosenthal Box (CR Box) DIY air purifier. The Corsi-Rosenthal Box is a powerful, low-cost air purifier that you can put together on the cheap. At Smart Air, we’ve been building, testing, and teaching people how …

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Smart Air is a social enterprise that creates simple, no-nonsense air purifiers and provides free education to protect people’s health from the effects of air pollution. We are proud to be the only certified B-Corp dedicated to fighting air pollution.