"PM2.5"

The ongoing cool dry season and lack of winds to blow away dust particles are bringing heavy pollution to many parts of Thailand.

Bangkokians should prepare for PM2.5 dust (particles less than 2.5 micrometres in diameter) during the cooler season from December to February, while real-time air quality information can be checked via websites and a phone application, the governor said on Wednesday.

The Bangkok Metropolitan Administration (BMA) is working with the Pollution Control Department to set up measures to tackle the PM2.5 (particles less than 2.5 micrometres in diameter) dust problem, which is expected to escalate during the coming cool season, Bangkok Governor Aswin Kwanmuang said on Sunday.

The city of Phayao has erected Thailand’s third “Fahsai” (Clear Sky) air purification tower to combat seasonal smog conditions that are among the worst in the North.

Air quality in Bangkok, Samut Prakan, Chiang Rai, Mae Hong Son and Chiang Mai provinces hit unsafe levels on Tuesday morning, the Centre for Air Pollution Mitigation reported.

Chiang Mai once again became the world's most polluted city on Friday due to a forest fire in Doi Suthep-Pui National Park on Thursday night.

Particulate matter smaller than 2.5 micrometres in diameter (PM2.5)– exceeded the safe level in 20 provinces, the Air Quality and Noise Management Bureau detected on Saturday at 7am

Air pollution in Bangkok, Samut Prakan, Samut Sakhon, Chiang Rai and Mae Hong Son hit unsafe levels on Wednesday morning, the Centre for Air Pollution Mitigation reported.

Air pollution in Bangkok, Samut Prakan, Samut Sakhon, Chiang Rai, Mae Hong Son and Tak provinces hit unsafe levels on Tuesday morning, the Centre for Air Pollution Mitigation reported.

The high number of vehicles on Thai roads have been blamed for the increasing PM2.5 dust pollution affecting both urban and non-urban people.

The air quality in Bangkok and 31 provinces hit unsafe levels on Friday morning, according to the Centre for Air Pollution Mitigation.

Air pollution due to a forest fire led to an increase in the number of respiratory patients in Chiang Mai on Wednesday.