Worst air pollution Ulaanbaatar, today and tomorrow
Today (10 August): Air quality in Ulaanbaatar is fair. NO2 and O3 are fair; AQI and SO2 are medium; PM2.5, PM10, CO, HCHO, and PM1 are good. Pollution peaks around 11:00 AM (SO2: 42.2/100).
Tomorrow (11 August 2026): Air quality in Ulaanbaatar is poor. AQI worsens to poor; NO2 decreases to medium; SO2 increases to poor; PM1 increases to fair; all other pollutants stay as today. Pollution peaks around 12:00 PM (SO2: 74.8/100). Airmine updates local air quality forecasts four times daily.
Get the full experience in the Airmine app.
Developed with support from the European Space Agency (ESA)’s Business Applications and Space Solutions (BASS) team
Follow your pollen exposure and performance with the free Airmine–Strava integration. See your pollen and air quality exposure for every Strava activity.
Ulaanbaatar's air quality faces among the world's most severe winter urban air quality challenges, with the enclosed Tuul River valley at 1,350 metres surrounded by the Bogd Khan and Chingeltei mountain ranges trapping intense coal and wood burning from the vast ger district's unregulated heating alongside vehicle emissions on the Peace Avenue. Winter PM2.5 routinely reaches catastrophic levels, while summer air quality is generally good with the Mongolian plateau's winds providing effective ventilation throughout the warmer months.
Today - 10 August | Pollution peaks at 11:00
AQI:
Medium
42.2/100
PM2.5 (fine particles):
Good
11.3/100
PM10 (coarse particles):
Good
3.0/100
NO2 (nitrogen dioxide):
Fair
36.1/100
O3 (ozone):
Fair
24.9/100
SO2 (sulfur dioxide):
Medium
42.2/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
2.1/100
PM1 (ultrafine particles):
Good
16.2/100
Levels show the poorest local air quality during the day
Tomorrow - 11 August | Pollution peaks at 12:00
AQI:
Poor
74.8/100
PM2.5 (fine particles):
Good
18.9/100
PM10 (coarse particles):
Good
5.0/100
NO2 (nitrogen dioxide):
Medium
50.0/100
O3 (ozone):
Fair
31.0/100
SO2 (sulfur dioxide):
Poor
74.8/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
3.1/100
PM1 (ultrafine particles):
Fair
25.3/100
Frequently Asked Questions
Is air quality bad in Ulaanbaatar right now?
On 10 August 2026, overall air quality in Ulaanbaatar is fair. NO2 is the main pollutant at 36.1/100. Pollution peaks around 11:00 AM (SO2: 42.2/100).
Will air quality be worse tomorrow in Ulaanbaatar?
On 11 August 2026, air quality conditions in Ulaanbaatar will be worse than today, with AQI forecast at poor at 74.8/100. Pollution peaks around 12:00 PM (SO2: 74.8/100).
When is air pollution at its worst in Ulaanbaatar?
Air quality in Ulaanbaatar tends to be worse when traffic emissions and wood-burning stoves build up and temperatures drop in winter. Residential heating through the colder months is a major seasonal source of particulates. This is far less of a factor once the heating season ends.
Are air quality levels in Ulaanbaatar 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.
Why doesn’t the forecast always reflect wildfire impacts?
Airmine’s forecast uses CAMS (Copernicus Atmosphere Monitoring Service) as its background atmospheric model. While CAMS includes wildfire emissions, these are derived from satellite observations and are not available in real time. During rapidly evolving wildfire events, there may therefore be a delay before increased emissions are incorporated into the model. As a result, the forecast may temporarily underestimate PM₂.₅ and other pollutants associated with wildfire smoke.
During rapidly evolving wildfire events, CAMS may lag by approximately 1–2 days before increased wildfire emissions are fully represented, which can lead to temporary underestimation of PM₂.₅ concentrations in Airmine’s forecast.
Check air quality in other popular cities:
Data provided by Airmine — Last update: 9 August 2026 at 20:27 CEST (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.
Disclaimer: Forecasts are provided for informational purposes only and should not be relied upon as medical advice. Actual pollen and air quality conditions may vary from the forecast. If you have allergies, asthma, or another medical condition, consult a healthcare professional. Please see our Terms of Service for important information about limitations of liability.
Get the full experience in the Airmine app.