Chiang Rai air quality · Thailand
Breathing through your nose filters more particles than your mouth
US AQI 81 (Moderate) in Chiang Rai, from 2 PCD monitoring stations. Main pollutant: PM2.5.
Updated
Pollutants in Chiang Rai
- PM2.5 · µg/m³25.11.7× WHO limit
- PM10 · µg/m³25.0Under WHO limit
Concentrations averaged across the city's stations. WHO multiples use the 2021 24-hour guidelines.
Is it safe outside in Chiang Rai right now?
Air quality is acceptable. People who are unusually sensitive to air pollution may feel effects with long or heavy exertion outdoors.
Walking and commuting
Go aheadFine for everyone.
Running and jogging
Take careFine for most; unusually sensitive people should ease the pace.
Cycling
Go aheadFine for everyone.
Children playing outside
Go aheadNo limits for most children.
Older adults and heart or lung conditions
Take careWatch for symptoms such as coughing or breathlessness.
Open windows
Go aheadFine to ventilate.
Mask outdoors
Not neededNot needed.
Air purifier indoors
Not neededOptional.
Based on the US EPA Air Quality Guide, applied to the current US AQI category. If you have symptoms, follow your doctor's advice.
What US AQI 51–100 means for your health →
Air quality by area in Chiang Rai
2 stations, worst first- Maesai Health OfficeModerate93
- Natural Resources and Environment Office, ChiangraiModerate69
Chiang Rai air quality history
Daily average, 35 days- 64average daily US AQI over 35 days
- 82worst day, 15 October
- 47cleanest day, 19 September
- 0days at Unhealthy or worse
The last 7 days averaged 78, worse than the week before (65). 1 of the last 35 days was Good.
Nearby cities
Thailand rankingChiang Rai air quality: common questions
What is the AQI in Chiang Rai right now?
The US AQI in Chiang Rai is 81 (Moderate), based on 2 monitoring stations. The main pollutant is PM2.5.
Is it safe to go outside in Chiang Rai today?
Fine for most people. Air quality is acceptable. People who are unusually sensitive to air pollution may feel effects with long or heavy exertion outdoors. For runners: Fine for most; unusually sensitive people should ease the pace.
Which area of Chiang Rai has the worst air right now?
Maesai Health Office has the highest reading at 93 (Moderate). Natural Resources and Environment Office, Chiangrai has the lowest at 69, out of 2 stations reporting.
How has air quality in Chiang Rai been recently?
Over the last 35 days with data, Chiang Rai averaged US AQI 64. The worst day was 15 October at 82; the cleanest was 19 September at 47. 0 days were at Unhealthy or worse.
How does Chiang Rai's PM2.5 compare with the WHO guideline?
PM2.5 is 25 µg/m³, about 1.7 times the World Health Organization's 24-hour guideline of 15 µg/m³.
Where does Chiang Rai's air quality data come from?
From Pollution Control Department (PCD) · Air4Thai, using 2 monitoring stations in and around the city. Good Air does not estimate or adjust these readings.
Source: Pollution Control Department (PCD) · Air4Thai. Readings are published by the monitoring agency and may be revised.