CityNews – The Pollution Control Department of Thailand has a website where you can check PM 2.5 levels around Chiang Mai, but it is difficult to get the results you are looking for. Here is a step by step guide on how to find the numbers.
The link to the website: http://aqmthai.com/public_report.php
Changing the site to English will not change the active module.
The station you need to select to have PM 2.5 readings displayed is the Sriphum station. On the list it is coded as 36t next to the name in Thai.
The Chiang Mai Muang readings (code 35t) has no record of PM 2.5 readings.
Report type select as Daily for best results.
Graph type can be changed depending on how you wish to see the results.
Select start period and end period dates.
Parameter: Select PM2.5
Once the parameters are set, click table in the upper right corner of the module.
The results will display as requested, and a summary will be displayed at the bottom showing the Max and Min PM 2.5 levels during the time period selected.
At the time of this article, February 15, the maximum PM 2.5 level over the last week was 151.68 PM 2.5 particles per cubic metre.
You can also check PM10 levels on the same site or visit aqicn.org and search for Chiang Mai.
To learn more about which masks can protect you the best against PM 2.5, visit aqicn.org/mask
Burning Report hotline: 1784
Here are two links to articles referencing the damage that PM 2.5 particles can have on your health.
http://www.onearth.org/earthwire/particulars-pm-25
http://www.nationmultimedia.com/national/Smog-linked-to-jump-in-heart-attacks-30255282.html