PM2.5 spikes in 38 provinces as North and Northeast face health risks
WEDNESDAY, APRIL 22, 2026
PM2.5 pollution hit red levels in 38 provinces on April 22, with the North worst affected as hotspots and cross-border haze raised fresh health concerns.
Bangkok heat index hits dangerous level despite good air
SUNDAY, APRIL 19, 2026
Bangkok’s air quality remained in the good range on April 19, 2026, but officials warned that a dangerous heat index had become the city’s main immediate health risk.
PM2.5 engulfs 39 provinces as northern Thailand enters critical stage
TUESDAY, APRIL 14, 2026
PM2.5 levels exceeded the safety standard in 39 provinces on April 14, with northern Thailand facing critical air pollution, according to the government’s air pollution centre.
Chiang Mai tops world air pollution ranking as PM2.5 worsens further
TUESDAY, APRIL 07, 2026
Chiang Mai was ranked the world’s worst city for air quality on April 7 after AQI hit 209, as dense haze blanketed the city and health risks intensified.
Chiang Mai tops global air pollution ranking as haze worsens and wildfire spreads in Mae Taeng
MONDAY, MARCH 30, 2026
On March 30, 2026, IQAir ranked Chiang Mai as the world’s worst for air quality at 10.00am, with an AQI of 233. Officials issued health alerts as wildfire spread in Mae Taeng.