The ambient air quality report for July 2021 presented air quality monitoring results from 4 stations, namely Wat Takuan, Thoet Thai Muslim, PTT Housing, and Wat Mab Chalood, throughout July 2021.
The 24-hour average measurements for Total Suspended Particulates (TSP) and Particulate Matter less than 10 microns (PM10) showed that the measured values throughout the month were below the legally prescribed standard limits. The standard limits are 330 µg/Nm³ for TSP and 120 µg/Nm³ for PM10. It was noted that Station A had a "sampling" status during that period.
For the hourly maximum measurements of Sulfur Dioxide (SO2) and Nitrogen Dioxide (NO2), it was found that the measured values from all stations throughout July 2021 were clearly below the legally prescribed standard limits. The standard limits are 300 ppb for SO2 and 170 ppb for NO2.
Overall, the ambient air quality data for July 2021 showed that all measured parameters, namely TSP, PM10, SO2, and NO2, were within the legally prescribed standard limits throughout the month. Full details are available in the attached file.