Worst Air Pollution in the World

Every year around this time, Chiang Mai, the city where we live experiences an increase in air pollution due to the burning of fields by farmers in North Thailand and surrounding countries.  Chiang Mai is surrounded by mountains and the air pollution is trapped in the city.  We have lived in Chiang Mai for 3 years now and this is the third burning season we've experienced and undoubtedly the worst.  The most commonly used measure for air pollution is the PM2.5 which is the air particle matter smaller than 2.5 micrometers.  These particles are dangerous because they are so small that they get lodged deep in your lungs and perhaps even into your blood.  The World Health Organisation (WHO) guideline is to keep the PM2.5 under 25. A PM2.5 reading over 50 is considered unhealthy.  Levels over 250 are considered hazardous to your health.  Chiang Mai has had days of PM2.5 over 400 in past weeks, being the worst polluted city in the world. 

When the levels are high you can feel and smell it in the air when you wake up.   Fortunately, none of my family have any breathing issues like asthma.  We also have the money to buy air purifiers which can reduce the air pollution within our house.  We also have bought masks for when we go out.  

We are praying for rain which will help reduce the pollution.  There is noise from those in authority about how they will crack down on the burning but it doesn't seem to ever have any significant impact. 

We are thankful that this is only a issue for about 2-3 months of the year, though I read a report that the period of air pollution has been increasing each year.