Worst air pollution Semey, today and tomorrow
Today (9 August): Air quality in Semey is fair. AQI, NO2, and O3 are fair; PM2.5, PM10, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 11:00 PM (NO2: 31.3/100).
Tomorrow (10 August 2026): Air quality in Semey is fair. AQI improves to medium; NO2 decreases to medium; SO2 increases to fair; all other pollutants stay as today. Pollution peaks around 4:00 AM (NO2: 43.5/100). Airmine updates local air quality forecasts four times daily.
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Developed with support from the European Space Agency (ESA)’s Business Applications and Space Solutions (BASS) team
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Semey's air quality reflects the flat Kazakhstan eastern steppe Irtysh River plain at 205 metres, with vehicle traffic on surrounding roads and the manufacturing, government, and agricultural corridor contributing local sources. The former Soviet Semipalatinsk Nuclear Test Site's environmental legacy represents the most historically significant environmental context, while winter residential coal heating under severe anticyclonic inversions generates elevated PM2.5 and Semey generally maintains moderate to elevated Kazakh eastern steppe city readings throughout the winter months.
Today - 9 August | Pollution peaks at 23:00
AQI:
Fair
31.3/100
PM2.5 (fine particles):
Good
6.0/100
PM10 (coarse particles):
Good
1.6/100
NO2 (nitrogen dioxide):
Fair
31.3/100
O3 (ozone):
Fair
28.2/100
SO2 (sulfur dioxide):
Good
15.7/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
4.0/100
PM1 (ultrafine particles):
Good
8.2/100
Levels show the poorest local air quality during the day
Tomorrow - 10 August | Pollution peaks at 04:00
AQI:
Medium
43.5/100
PM2.5 (fine particles):
Good
8.7/100
PM10 (coarse particles):
Good
2.4/100
NO2 (nitrogen dioxide):
Medium
43.5/100
O3 (ozone):
Fair
33.1/100
SO2 (sulfur dioxide):
Fair
22.9/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
5.4/100
PM1 (ultrafine particles):
Good
11.5/100
Frequently Asked Questions
Is air quality bad in Semey right now?
On 9 August 2026, overall air quality in Semey is fair. AQI is the main air quality indicator at 31.3/100. Pollution peaks around 11:00 PM (NO2: 31.3/100).
Will air quality be worse tomorrow in Semey?
On 10 August 2026, air quality conditions in Semey will be similar to today, with O3 forecast at fair at 33.1/100. Pollution peaks around 4:00 AM (NO2: 43.5/100).
When is air pollution at its worst in Semey?
The biggest local contributors to pollution in Semey are traffic on the surrounding roads, manufacturing activity, as well as crop farming, particularly once temperatures drop in winter. Coal and wood used for winter heating add substantially to particulate levels. This effect eases considerably during the warmer months.
Are air quality levels in Semey 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.
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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.
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