The Ambient Air Quality Monitoring Report for November 2021 presents air quality monitoring data from 4 stations, namely Wat Takuan, Thoed Thai Muslim, PTT Housing, and Wat Mab Chalood, covering the measurement of Total Suspended Particulate (TSP), Particulate Matter less than 10 microns (PM10), Sulfur Dioxide (SO2), and Nitrogen Dioxide (NO2) throughout November 2021.
For 24-hour average Total Suspended Particulate (TSP) measurements, all measured values were below the standard limit of 330 micrograms per cubic meter. It was noted that data from Shelter A (PTT Housing) on November 15, 2021, had less than the required sampling data.
Regarding 24-hour average Particulate Matter less than 10 microns (PM10) measurements, all measured values were below the standard limit of 120 micrograms per cubic meter. It was noted that Shelter C (Wat Mab Chalood) had dirt found on its filter on November 1, 2021, which was inspected and cleaned by ICT. Additionally, data from Shelter C had less than the required sampling data on November 12, 13, and 27, 2021.
For hourly maximum Sulfur Dioxide (SO2) and Nitrogen Dioxide (NO2) measurements, all measured values throughout November 2021 were clearly below the standard limits of 300 ppb for SO2 and 170 ppb for NO2.
In summary, the ambient air quality monitoring results for November 2021 at all 4 monitoring stations show that the overall air quality met the legally prescribed standards for all measured parameters.
Full details of the monitoring results are available in the attached file.