By THE NATION
The application showed the Thai capital’s average pollution level at 169 and Chiang Mai at 166.
Particulate matter less than 2.5 microns in diameter (PM2.5) in Bangkok and Chiang Mai were at 89.9 and 83.6 micrograms per cubic metre, respectively.
According to the Air Quality Index, air quality between 0 to 50 is healthy, 51 to 100 is moderate, 101 to 150 is unhealthy for sensitive groups, 151 to 200 is unhealthy, 201 to 300 is very unhealthy, and 301 to 500 is dangerous.
Meanwhile, the Pollution Control Department (PCD) said via website Air4thai.pcd.go.th that at 7am today the air quality in Bangkok and nearby provinces was mostly at unhealthy levels, with a tendency to worsen.
The PCD found that PM2.5 dust particles were between 54 and 88 micrograms per cubic metre.