'Public Health' warns 'PM2.5' in 47 provinces is likely to intensify, with levels forecast to increase over the next 1-2 days

January 15, 2026. Dr. Weerawut Imsamran, Board Member by Position and Representative of the Public Health Ministry's Permanent-Secretary, stated that PM2.5 levels are consistently high in several locations of Thailand. As of 7:00 AM today, the 24-hour average PM2.5 levels were above the threshold of 37.5 µg/m³ and were classed as having a health impact (orange level) in 47 provinces.

These are mostly located in the North, Central, Northeast, and Eastern regions, including Bangkok and its surrounding areas. 28 provinces have exceeded the standard for three consecutive days or more: Bangkok, Kalasin, Khon Kaen, Chachoengsao, Chonburi, Nakhon Pathom, Nakhon Ratchasima, Nonthaburi, Pathum Thani, Phra Nakhon Si Ayutthaya, Phitsanulok, Maha Sarakham, Rayong, Ratchaburi, Roi Et, Lamphun, Samut Prakan, Samut Songkhram, Samut Sakhon, Saraburi, Sing Buri, Surin, Nong Khai, Udon Thani, Uttaradit, Uthai Thani, Ang Thong, and Phetchaburi.

Today's air quality measurements in Nonthaburi (95.8 µg/m³), Phra Nakhon Si Ayutthaya (82.9 µg/m³), and Samut Sakhon (82.2 µg/m³) surpassed the 24-hour average of 75.1 µg/m³, indicating a risk to health. Three provinces (Samut Sakhon, Nonthaburi, and Bangkok) surpassed 75.1 µg/m³ for two or more consecutive days.

Dr. Weerawut Imsamran, Board Member by Position and Representative of the Public Health Ministry's Permanent-Secretary

Dr. Weerawut state that, air quality forecasts over the next 1-2 days show an increase in particulate matter levels in several regions due to poor ventilation. As a result, the public is recommended to check the air quality before leaving home using apps like Air4Thai, AirBKK, Life D, or Check Dust, and to follow the recommendations based on the color-coded levels. Vulnerable groups, like children, pregnant women, the elderly, and individuals with underlying health issues, may suffer health consequences from particulate matter above the threshold.

Furthermore, limit the time of outdoor activities and intense exercise. If required, always use a dust mask and keep an eye out for any strange symptoms. Assess your symptoms and get initial assistance from 4HealthPM2.5 or online pollution clinics. If you notice any strange symptoms, seek medical attention right once. Stay inside or in a dust-free room. Those with pre-existing conditions should gather the required drugs and equipment. Reduce activities that produce dust indoors. However, if the air quality is red, people should avoid outside activity.

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Source of material: official media /online news