More provinces see minor improvement in air quality

According to the Geo-Informatics and Space Technology Development Agency (Gistda), five provinces in the Central Plain were under red-alert levels of PM2.5, down from 15 on Tuesday.

On December 13, Thailand witnessed a slight improvement in air quality, with dangerous levels of ultrafine dust (PM2.5) reported in 33 out of 77 provinces, a decrease from 47 provinces the previous day.

According to the Geo-Informatics and Space Technology Development Agency (Gistda), five provinces in the Central Plain were under red-alert levels of PM2.5, down from 15 on Tuesday. The highest pollution was in Samut Sakhon, with a PM2.5 concentration of 95.2 microgrammes per cubic meter, exceeding the government’s safe threshold of 37.5g/m.

Twenty-eight other provinces in the Central Plain recorded orange levels of PM2.5, indicating a health risk, with concentrations ranging from 37.7 to 71.9g/m….