Harmful PM2.5 levels in Greater Bangkok

The Pollution Control Department has warned of harmful levels of PM2.5 dust in Greater Bangkok on Monday and Tuesday and again later this weekend, because of stagnant air over the capital.

Harmful PM2.5 levels in Greater Bangkok
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Harmful PM2.5 levels in Greater Bangkok

published : 17 Jan 2022 at 11:19

writer: Gary Boyle

ORIGINAL SOURCE/WRITER: Online Reporters

Bangkok saw high levels of PM2.5 in December 2021, as seen in this file photo.

The Pollution Control Department has warned of harmful levels of PM2.5 dust in Greater Bangkok on Monday and Tuesday and again later this weekend, because of stagnant air over the capital.

The department reported on Monday morning that over the past 24 hours the level of PM2.5 in Greater Bangkok ranged from 28-62 microgrammes per cubic metre (µg/m³) of air. The local safe threshold is 50 µg/m³, higher  than most other countries.

Unsafe levels were measured in Bung Kum, Klong Sam Wa, Wang Thong Lang, Don Muang, Sai Mai, Bang Kapi, Lat Krabang, Min Buri, Thawi Watthana and Nong Khaem districts.

The department said fine dust levels would rise on Tuesday morning, drop from Wednesday to Friday due to air movement and rise again on Saturday and next Monday due to stagnant air.

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Vocabulary

  • dust: very small pieces of dirt that cover surfaces inside buildings like a powder - ฝุ่น
  • PM2.5 (n): atmospheric particulate matter (PM) with a diameter of less than 2.5 micrometres, which is about 3% the diameter of a human hair. It can lodge in the lungs and enter blood vessels, leading to respiratory and cardiovascular disease -
  • stagnant: (of water or air) not moving and therefore smells unpleasant - นิ่ง, น้ำทรง
  • threshold: the level or point at which you start to experience something, or at which something starts to happen - จุดเริ่มของประสบการณ์หรือเหตุการณ์ใหม่ๆ
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