Unsafe levels of smog in 67 provinces

Thick smog is seen from the Phra Pinklao Bridge above the Chao Phraya River in Bangkok on Jan 23. (Photo: Nannalin Tiengtae)
On January 23, solid dust can be seen from the Phra Pinklao Bridge above Bangkok’s Chao Phraya River. ( Photo: Nannalin Tiengtae )

On Thursday night, the Geo-Informatics and Space Technology Development Agency reported that 67 of Thailand’s 77 regions were covered in risky amounts of fine sand.

Gistda reported at 8am on Thursday that three provinces recorded the red levels ( hazardous-to-health ) of&nbsp, particulate matter 2.5 micrometres and less in diameter ( PM2.5 ).

Over the past 24 hrs, Nakhon Nayok has experienced the highest dark stage of PM2.5, measuring 114.3 microgrammes per square meter.

Two other provinces in red PM2.5 levels were Prachin Buri ( 81.8µg/m³ ) and Samut Songkhram ( 77.7 ).

The healthy level is at 37.5µg/m³.

Ten regions had protected air quality. Of them, nine counties had average weather quality represented by bright levels of PM2.5 ranging from 27 to 36.9µg/m³. In descending attempt, they were Chiang Mai, Udon Thani, Nong Bua Lam Phu, Mae Hong Son, Ranong, Surat Thani, Phangnga, Nakhon Si Thammarat and Chumphon.

Good air quality was detected only in Krabi ( 23.8µg/m³ ).

Sixty-four other provinces faced orange levels ( starting to affect health ) of PM2.5 ranging from 38.3 to 73.8µg/m³. They included Ayutthaya, Bangkok, Chiang Rai, Chon Buri, Kanchanaburi, Nakhon Ratchasima, Prachuap Khiri Khan, Phuket, Samut Prakan and Songkhla.