Fig. 2

Time series of daily PM2.5 concentrations, temperature, and relative humidity in Songkhla, Thailand (2010–2023)
The light gray-shaded area illustrates the 95% confidence interval of hourly measurements for each variable
Time series of daily PM2.5 concentrations, temperature, and relative humidity in Songkhla, Thailand (2010–2023)
The light gray-shaded area illustrates the 95% confidence interval of hourly measurements for each variable