Cars drive along a road in Chiang Mai amid deteriorating air quality, air pollution with 180 microgrammes of particulate matter micrometres and less in diameter () per cubic metre. On Sunday 12 March 2023, Chiang Mai was still listed as the world's worst, on IQAir – a technology partner of the United Nations Environmental Programme. IQAir’s city pollution rankings compares 95 global cities worldwide with measured data.

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Size: 2297px × 3250px
Photo credit: © SOPA Images / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: air, blanket, cars, dense, environmental, hazardous, issues, polluted, pollution, road, smog, smoggy, vehicles