Highest air pollution Vientiane, today and tomorrow
Today (29 June): Air quality in Vientiane is fair. AQI, NO2, and O3 are fair; PM2.5, PM10, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 10:00 AM (O3: 28.3/100).
Tomorrow (30 June 2026): Air quality in Vientiane is fair. All pollutants stay as today. Pollution peaks around 4:00 PM (O3: 33.3/100). Airmine updates local air quality forecasts four times daily.
For long term forecasts and maps, see the Airmine app
Developed with support from the European Space Agency (ESA)’s Business Applications and Space Solutions (BASS) team
Vientiane's air quality reflects the flat Mekong River valley position adjacent to Thailand's Nong Khai, with vehicle traffic on Lane Xang Avenue and the surrounding construction, manufacturing, and agricultural operations contributing local sources. The Mekong's flat alluvial plain generally allows reasonable dispersal, while dry season agricultural and forest burning from February to April generates regional PM2.5 elevation across the broader Lower Mekong region and the wet season monsoon provides effective atmospheric cleansing throughout the year.
Today - 29 June | Pollution peaks at 10:00
AQI:
Fair
28.3/100
PM2.5 (fine particles):
Good
13.6/100
PM10 (coarse particles):
Good
3.7/100
NO2 (nitrogen dioxide):
Fair
21.6/100
O3 (ozone):
Fair
28.3/100
SO2 (sulfur dioxide):
Good
17.3/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
13.0/100
PM1 (ultrafine particles):
Good
19.0/100
Levels show the poorest local air quality during the day
Tomorrow - 30 June | Pollution peaks at 16:00
AQI:
Fair
33.3/100
PM2.5 (fine particles):
Good
8.2/100
PM10 (coarse particles):
Good
2.2/100
NO2 (nitrogen dioxide):
Fair
20.7/100
O3 (ozone):
Fair
33.3/100
SO2 (sulfur dioxide):
Good
19.1/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
10.0/100
PM1 (ultrafine particles):
Good
11.5/100
Pollen forecast in Vientiane
View pollen forecastFrequently Asked Questions
Is air quality bad in Vientiane right now?
On 29 June 2026, overall air quality in Vientiane is fair. AQI is the main air quality indicator at 28.3/100. Pollution peaks around 10:00 AM (O3: 28.3/100).
Will air quality be worse tomorrow in Vientiane?
On 30 June 2026, air quality conditions in Vientiane will be similar to today, with AQI forecast at fair at 33.3/100. Pollution peaks around 4:00 PM (O3: 33.3/100).
Are air quality levels in Vientiane based on measurements or forecasts?
It is forecasts derived by downscaling forecasts provided by EU’s Copernicus Atmosphere Monitoring Service (CAMS) by taking into account local conditions such as traffic patterns. CAMS bases its forecast on satellite measurements of particles and chemical compounds in the atmosphere. Airmine’s services were developed with support from the European Space Agency (ESA)’s Business Applications and Space Solutions (BASS) team.
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Data provided by Airmine — Last update: 28 June 2026 at 18:37 CET (Data is updated four times daily.)
This forecast is produced independently using Airmine's own atmospheric data and models.
Unless explicitly made clear, the content on this site has not been paid for by external organisations and is Airmine's sole responsibility.
For long term forecasts and maps, see the Airmine app
Developed with support from the European Space Agency (ESA)’s Business Applications and Space Solutions (BASS) team