News (May 8th, 2015): Noticed a change in PM10 AQI data? Hourly data (InstantCast) is now in use (more info).
Air Quality Data provided by the Division of Air Quality Data, Air Quality and Noise Management Bureau, Pollution Control Department. (aqmthai.com)
Note that the measurement for and O3 (ozone) are taken from the station City Hall, Chiangmai