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

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

Chengdu’s PM2.5 Now as Bad as Beijing

It’s nerd Christmas! The US Embassy’s 2016 PM2.5 data just came out. And there’s a surprise in the data from Beijing and the US Consulate in Chengdu: Chengdu just barely edged out Beijing for highest PM2.5. I had to go out to two decimal places to find that difference. How … Read more

Did China’s Air Improve in 2016?

The US Embassy’s complete data for 2016 is now out! Smart Air analyzed the data to see if China’s air got any better in 2016. There are a few reasons to think 2016 was a good year. China has moved to tighten standards on gasoline and diesel and increase renewable … Read more

What Time of Day Is Air Pollution Lowest?

My intuition has always been that there is least air pollution at night because there are fewer cars on the road and fewer factories humming at that time of day.   Pollution Time of Day Guesses   Apparently I’m not alone: 139 voted for their guess about what time of day … 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.