How’s the Air Quality in Tangshan?

There are reasons to be pessimistic about the air quality in Tangshan. Tangshan is a largely industrial city in Hebei province, which is the industrial heartland of China and one of the most polluted provinces. Tangshan also boasts one of China’s top 10 busiest ports.     To get some … Read more

Did Bangalore’s Air Quality Get Better in 2018?

Analyzing air quality data from the Berkeley Earth Project, Smart Air found that Bangalore’s air quality worsened by 7% in 2018 compared to 2017. This puts Bangalore at about 4 times the World Health Organization’s annual limit.     Bangalore Air Pollution by Month Breaking down the data by month reveals … Read more

Is Beijing or Delhi Air Worse?

Beijing and Delhi often make headlines for air polluted cities, but which city has worse air? I wanted to get some hard numbers on how the two cities’ air quality compare.   The Data To do that, I analyzed PM2.5 data from the US Embassies in Delhi and government monitors … Read more

What Is PM0.3 and Why Is It Important?

There’s a lot of fuss around 0.3 micron particles. What’s a 0.3 micron filter? Why are HEPA filters listed as filtering 0.3 micron particles? Can masks and HEPA filters capture 0.3 micron particles? This article will provide the answers to these questions. What Does “PM” Mean? To understand what PM0.3 … Read more

Is China to Blame for Seoul’s Air Pollution?

Air pollution is a serious problem in Seoul, which South Koreans have often blamed China for. Is that fact or a convenient scapegoat? After all, Seoul is a densely populated, developed city that depends on coal power plants. South Korea certainly has its own sources of pollution. To get to … Read more

How Bad Is the Air Pollution in Seoul?

How bad is the air pollution in Seoul, South Korea? On the one hand, Seoul is a modern, developed place, which means it shouldn’t be that bad. On the other hand, news media have reported several bad smog attacks in the last year. I wanted to get some hard numbers … Read more

What’s the HEPA Lifespan of the Blast and Blast Mini?

Ever since we launched the Blast and Blast Mini in 2017, we’ve wanted to get good data on how long hepa filters last. These filters are huge, 10-20 times the size of our DIY purifier filters in fact. We’d expect the HEPA lifespan to be much longer, but let’s see what the … Read more

Smart Air is a social enterprise that creates simple, no-nonsense air purifier 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.