The Ministry of Natural Resources and Environment said satellite data showed numerous polluted hotspots across the country, which have set record levels of poor air quality in some places and greatly reduced visibility, reported the Vientiane Times.
According to the World Health Organization, the average standard level of PM2.5 has been set at 25μg/m3 over a 24 hour period.
The concentration of PM2.5 measured in Vientiane on Saturday rose to 71µg per cubic meter (m3) of air which can negatively affect people’s health.
Additionally, Borikhamxay, Luang Prabang and Xieng Khuang provinces had exceeding levels of polluted air and were in concern as well.
People were recommended to avoid being outdoors as much as possible and also to wear masks.