What Are Good Air Quality and Safe PM2.5 Levels For Your Home?

After more than 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 …

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What is PM2.5 AQI and How is it Calculated?

PM2.5 AQI (air quality index) is the most common measurement used to track air pollution and air quality. In this article, we will discuss how PM2.5 AQI is calculated, how you can use it, and we’ll uncover its funny quirk. How Is PM2.5 AQI Calculated? To calculate the PM2.5 AQI …

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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 and certified B-Corp that offers simple, no-nonsense air purifiers and provides free education to protect people from the harms of air pollution. We are proud to be the only certified B-Corp dedicated to fighting air pollution.

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