Children and their families are being urged to wear face masks while celebrating National Children's Day, as severe pollution is expected in Bangkok this weekend.
As of Friday, the surface wind speed in Bangkok was only 3 kilometres per hour. The international air quality monitoring website https://aqicn.org/city/bangkok/ reported that the PM2.5 air quality index in Bangkok peaked to 410, a significantly harmful level.
Although it will be a bit windy during this weekend, it will be insufficient to improve the air quality in Bangkok.
People, especially children, elders, and sick persons, are urged to be very cautious when doing outdoor activities and should wear face mask at all times.
The World Health Organisation has warned that prolonged exposure to PM2.5 could lead to many respiratory diseases and increase the risk of premature death.