Preparing for Air Pollution in Ulaanbaatar, Mongolia

Air purifiers and air pollution are probably the last things that come to mind when thinking of Mongolia. But maybe it should be the first, given how bad the air there is.

I was living in Beijing during the airpocalypse, so I decided to buy an air purifier. Then I discovered how expensive they are! The air purifier I wanted cost $1,000! 

I did some research and found out that all you need to remove particulate pollution is a fan and a HEPA filter. The HEPA filter is what captures the small sized PM2.5 particles. Even the $1,000 air purifier uses a fan and a HEPA filter to do just this! So I got my hands on a HEPA filter and strapped it to a fan to make own DIY air purifier:


A low cost, effective DIY air purifier for Mongolia


Then I bought a laser particle counter and did tests comparing the DIY air purifiers to the expensive air purifier brands I could find on the market. Here’s what I found averaged over dozens and dozens of tests in my Beijing apartment:


Which purifiers work best Mongolia


All the testing methods and original data are publicly available–check it out! 

After I discovered purifiers could cost just a fraction of what other companies in the purifier market wanted, I started a social enterprise I called Smart Air to help spread the word. My team and I have now shipped over 40,000 low-cost purifiers to people all over China. Woah!

Since then, I’ve received emails from several people in Ulaanbaatar, Mongolia asking if we can ship our purifiers there. I never knew how bad the air pollution is there!


High PM2.5 levels blanket Ulaanbaatar, Mongolia in smog every winter


But it’s downright terrible. The black line here is the average PM 2.5 in Ulaan Baatar (particulate pollution). The red line is what the WHO considers safe:


Ulaanbaatar air pollution and PM2.5 annual levels

From 2008 to 2011 Ulaan Baatar averaged nearly 150 micrograms of PM 2.5! That’s worse than Beijing. In 2014, Beijing averaged 98 micrograms. The graph also shows huge PM2.5 peaks in the winter, and much, much lower. Here’s another graph from 2015 to 2018, showing the trends over 3 winters:

Ulaanbaatar PM2.5 air pollution levels 2015 - 2018

Why are Ulaanbaatar PM2.5 levels so high during the winter?

Most of Ulaanbaatar’s air pollution comes from coal. In the winter, people across Ulaanbaatar – from the gers in the suburbs to the government heating facilities – are burning coal. This creates the sooty, black pollution levels that start to rise in October every year, then drop off come March when temperatures start warming.

So I packed my bags, carted three huge boxes of fans and filters to the airport, and flew to Ulaan Baatar to host some DIY workshops! 

How to protect yourself from air pollution - workshop in Ulaanbaatar

Mongolians building DIY air purifiers to clean air pollution

New Mongolian owners of finished Original DIY air purifiers

With the help of several people in the capital, I hosted some workshops, and then subsequently launched Smart Air in Mongolia! Since then we’ve shipped air purifiers, masks and air pollution monitors to breathers across Ulaanbaatar, helping more people get clean air!

First shipment of cheap yet effective air purifiers for Mongolia


Do air purifiers work in Ulaanbaatar, Mongolia?

While I was there, I ran some tests to make sure the DIY air purifier works well in Mongolia too. Here’s what my bedroom in Ulaanbaatar looked like: 

You can see the particle counter on the left and the DIY air filter on the right.

Here’s what happened to 2.5 micron particles after I turned on the DIY air purifier in my 15 square meter UB bedroom: 

Here’s what happened to the smaller size 0.5 micron particles: 

The two graphs show that after just 1-2 hours, the simple yet affordable DIY air purifier was able to filter out even the tiniest-sized 0.5 micron particles, it did just as well capturing the larger 2.5 micron (and above) particles.

The answer’s simple, it’s not difficult to prepare yourself for Mongolia’s winter air pollution season. Get yourself a simple DIY air purifier, and that’s it!

Breathe safe, Mongolia!

Free Guide to Breathing Safe

Want to learn more about Air Pollution? Join thousands more and stay up to date on protcting your health.

Notify of
Inline Feedbacks
View all comments

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.