Chiang Mai, Thailand

Daily Pollution Levels on

PM2.5 Concentration

Meets National Standard (60 µg/m³)

Meets WHO Guideline (15 µg/m³)

Download Data

ระดับมลพิษเฉลี่ยรายปีในเชียงใหม่

Source: Air Quality Life Index
Download Data

Chiang Mai Weekly Cigarettes

Note: These are estimations based on Berkeley Earth’s “Air Pollution and Cigarette Equivalence,” https://berkeleyearth.wpengine.com/air-pollution-and-cigarette-equivalence/
Download Data

Top 10 Threats to Life Expectancy in Thailand

Threat to Life Expectancy

Life Years Lost
0-0.1

0.1-0.5

0.5-1.0

1.0-2.0

2.0-3.0

3.0-4.0

Source:Global Burden of Disease (https://vizhub.healthdata.org/gbd-results/), level-2 causes and risks data and WHO Life Tables (https://apps.who.int/gho/data/node.main.LIFECOUNTRY?lang=en), were combined with the Life table method to arrive at these results. ‘PM2.5 relative to WHO Guideline’ bar displays the reduction in life expectancy relative to the WHO guideline as calculated by latest AQLI (2023 PM2.5 concentrations) data.
Download Data

In the News

In the News·Aug 25, 2025

Chiang Mai ranked the most polluted city in the world on Saturday

via Nation Thailand
The northern Thai city of Chiang Mai was ranked as the most polluted in the world on Saturday, according to air-quality monitoring website IQAir.
Learn More
In the News·Aug 26, 2025

Chiang Mai Municipality ranks ninth among most polluted cities

via Nation Thailand
Chiang Mai Municipality was ranked the ninth most polluted city in the world on Friday morning, with an Air Quality Index (AQI) of 147, according to IQAir.
Learn More
In the News·Aug 27, 2025

Chiang Mai and Northern Thailand battle severe air pollution as wildfires rage

via Pattaya Mail
CHIANG MAI, Thailand –– Northern Thailand is experiencing severe air pollution from wildfires, with PM 2.5 levels reaching alarming highs in the morning (March 30). Locals in Chiang Mai can visibly see the smoke in the air. Authorities are working...
Learn More
In the News·Aug 27, 2025

Hazardous air pollution blankets Chiang Mai, ranks 6th worst in the world

via Pattaya Mail
Smoke and haze continue to blanket Chiang Mai, with the PM 2.5 pollution level reaching nearly 500 micrograms per cubic meter per hour, placing the city among the top 6 most polluted cities worldwide.
Learn More
In the News·Aug 27, 2025

Chiang Mai Fires and PM2.5 Pollution Crisis: A Battle for Clean Air in Northern Thailand 2025

via THAI.NEWS
In an alarming revelation, the map was smattered with fiery red zones across 18 northern and northeastern provinces, indicating hazardous levels of this insidious dust.
Learn More
In the News·Aug 27, 2025

The Draft Clean Air Act: Thailand Readies Legislation to Combat Air Pollution

via National Law Review
To combat air pollution, the authorities in Thailand have enacted a patchwork of legal measures, including stricter vehicle emission standards, promotion of electric vehicles, regulation of industrial emissions, and various other regulatory instruments, to combat practices that result in air...
Learn More