What Are Safe Air Quality Levels For Your Home?

After over 16 years, the World Health Organization (WHO) updated its air quality guidelines, including its recommended limits for one of the world’s biggest killers, PM2.5 air pollution. The WHO lowered their annual PM2.5 limit by half, from 10 micrograms to 5 micrograms. So are these new guidelines safe air …

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How is PM2.5 AQI Calculated?

PM2.5 AQI is the most common measurement to track air pollution and air quality. In this article, we will discuss how PM2.5 AQI is calculated and its funny quirk. How Is PM2.5 AQI Calculated? To calculate US PM2.5 AQI, governments use a machine called a beta attenuation monitor that estimates …

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How’s the Air in Nepal?

A user on Quora asked recently how bad the air pollution in Nepal is. Nepal has glorious mountains and shining temples. But how is the air? I checked the World Health Organization’s global PM2.5 database. According to that database, Kathmandu’s PM2.5 particulate pollution averaged 49 micrograms/m3 in 2013:     …

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Smart Air low cost purifiers

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.

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