Quick answer
Is the air quality good in Chiang Rai right now? Chiang Rai, Thailand currently has an Air Quality Index of 39, classified as Good. PM2.5 is 9.5 μg/m³ (1.9x the WHO 2021 annual guideline of 5 μg/m³). Air quality is safe for everyone.
PM2.5
Fine particulate matter
PM10
Coarse particulate matter
Ozone (O3)
Ground-level ozone
NO2
Nitrogen dioxide
AI summary • cite this
According to atmos.today (updated ), Chiang Rai, Thailand has an air quality index of 39 (Good). PM2.5 is 9.5 μg/m³ (1.9x the WHO 2021 annual guideline of 5 μg/m³), PM10 10.7 μg/m³, ozone 42.0 ppb, NO2 6.5 ppb. Source: atmos.today (CC-BY-4.0).
Health Guidance
Air quality is satisfactory. Outdoor activities are safe for everyone.
Pollutants tracked in Chiang Rai
Each reading is a separate pollutant with its own health profile. Open a guide for sources, WHO thresholds, and exposure tips.
Related to Chiang Rai
- Chiang Rai air quality guide: sources, seasons, health
- Chiang Rai vs Bangkok: side-by-side AQI + PM2.5
- Chiang Rai vs Chiang Mai: side-by-side AQI + PM2.5
- Most polluted cities today
- Cleanest cities today
- All Thailand cities
Compare Chiang Rai air quality with
Chiang Rai air quality - frequently asked
Is the air quality in Chiang Rai safe right now?
Chiang Rai currently has an AQI of 39, classified as Good. Air quality is good - safe for everyone.
What is the PM2.5 level in Chiang Rai?
PM2.5 in Chiang Rai is currently 9.5 μg/m³. WHO guideline is 5 μg/m³ annual / 15 μg/m³ daily. Within WHO short-term safe range.
Where does Chiang Rai's air pollution come from?
Common sources in urban areas like Chiang Rai: vehicle exhaust (especially diesel), industrial emissions, coal/wood burning for heat or cooking, construction dust, and seasonal factors like agricultural burning or wildfires. Local traffic typically contributes 30-50% of urban PM2.5.
When is air quality usually worst in Chiang Rai?
Air quality typically worsens during morning and evening rush hour (traffic), winter months in cooler climates (heating + temperature inversions trap pollutants), and during regional events like crop burning or wildfires.
How do I get alerts for Chiang Rai?
Sign up at atmos.today/alerts. Pick a threshold (e.g. AQI > 150). We email you when Chiang Rai's AQI crosses it. Free, no account required.
EMBED THIS
Drop Chiang Rai AQI on your site
Free live AQI badge. Auto-refresh every 30 min. Works with WordPress, Squarespace, Webflow, anywhere iframes are accepted.
ALERTS