Bangkok air pollution breaches safety limit in five districts, residents urged to mask up

Bangkok's air quality alarmingly exceeded Thailand's safety limits in five districts on October 9, prompting health advisories for residents. Fine particle levels, specifically PM2.5, breached the national threshold of 37.5 micrograms per cubic metre (µg/m³), warning of potential health impacts. The highest concentration, 48 µg/m³, was recorded in Yan Nawa district, with Prawet, Khlong Toei, Pathum Wan and Bang Khun Thian following close behind at 40.4, 40, 39.5 and 38.5 µg/m³ respectively.

The city's overall average air quality was reported at 29.2 µg/m³, still below the national danger point, but falling into Thailand's orange category, signaling health risks. Despite the elevated levels, Bangkok's citywide average remained below the dangerous threshold. However, other districts like Bang Na, Sathon and Rat Burana also registered high concentrations - 35.5, 34.9 and 34.5 µg/m³ respectively.

With pollution trends on the rise, authorities urged residents to don protective masks, wear N95 respirators when outdoors and limit strenuous activities. Symptoms like coughing, breathing difficulties, chest tightness and eye irritation were flagged as warning signs. Special caution was advised for vulnerable groups, including children, seniors, pregnant women and those with chronic respiratory or heart conditions.

They were advised to avoid outdoor activities and seek medical help for unusual symptoms. PM2.5 particles, smaller than 2.5 micrometres in diameter, can deeply penetrate the lungs and bloodstream, linked to respiratory and cardiovascular issues.