Did China’s Air Get Better in 2018?

New data analysis from Smart Air shows that air quality improved in 14 out China’s 15 largest cities. This data suggests China’s “war on air pollution” seems to be working.     This analysis uses over 21,000 daily average PM2.5 data points from official sensors around the country.    Beijing Famous … Read more

After Best January on Record, Beijing PM2.5 Worsens

After best January on record, China’s air pollution worsens     An analysis by Smart Air of data from pollution stations found that, after Beijing’s best year on record, Beijing PM2.5 levels are now worse than 2017. Data from 11 other major cities showed similar trends.   Beijing Compared to … Read more

What Would China’s Air Be Like if Everyone Stopped Driving?

  Air pollution includes a bunch of microscopic particles, but have you ever wondered what those particles are exactly? In a study published in Nature, scientists tested the air in Beijing, Xi’an, Shanghai, and Guangzhou to find out exactly what PM2.5 is made of. By tracing the composition of the particles, they could gain … Read more

Is the Laser Egg Only Accurate in Beijing?

A few months ago, Smart Air tested the Laser Egg, the Node, and the Dylos against official PM2.5 readings. The results were way better than I expected! All three machines correlated r = .90 or higher with the gold-standard numbers, which is very high. But this test may have exaggerated their … Read more

Is PM2.5 Worse on the Subway?

I wear a pollution mask in Beijing, and I’ve always taken it off when I get into the subway. That’s because I’ve always assumed air in the subway is better than outside. But am I right to take it off? I’ve heard a lot of Beijingers debating whether air in … Read more

Is China’s Air Getting Better? 2017 So Far

Beijing said they would cut air pollution in a plan announced earlier this year (and a few months before and another one back in 2013). But what does the data say? To get to the bottom of it, I analyzed monthly PM2.5 data for 2017 so far and compared it … 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.