People in 55 of the 77 provinces were breathing dirty air on Wednesday morning, with red-coded pollution levels in 20 provinces, mainly in the Central Plains.
The Geo-Informatics and Space Technology Development Agency (Gistda) reported at 9am that unsafe levels of PM2.5 ranged from 38.7 to 113.6 microgrammes per cubic metre of air over the previous 24 hours. The government-set safe threshold is 37.5µg/m³.
