Worst air pollution Dupnitsa, today and tomorrow

Today (12 August): Air quality in Dupnitsa is fair. NO2 is fair; AQI and O3 are medium; PM2.5, PM10, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 12:00 PM (O3: 43.6/100).
Tomorrow (13 August 2026): Air quality in Dupnitsa is fair. All pollutants stay as today. Pollution peaks around 2:00 PM (O3: 44.1/100). 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.

Dupnitsa, in the Struma river valley beneath Rila mountain, sees vehicle traffic and residential wood-burning trapped by the valley as its principal air quality driver. The Kyustendil terrain shapes local dispersion, and while breezy, unsettled weather usually brings swift improvement, prolonged calm periods can let pollutant levels climb noticeably.

Today - 12 August | Pollution peaks at 12:00

AQI:

Medium

43.6/100

PM2.5 (fine particles):

Good

6.0/100

PM10 (coarse particles):

Good

2.0/100

NO2 (nitrogen dioxide):

Fair

35.1/100

O3 (ozone):

Medium

43.6/100

SO2 (sulfur dioxide):

Good

7.1/100

CO (carbon monoxide):

Good

0.0/100

HCHO (formaldehyde):

Good

9.8/100

PM1 (ultrafine particles):

Good

7.5/100

Levels show the poorest local air quality during the day

Tomorrow - 13 August | Pollution peaks at 14:00

AQI:

Medium

44.1/100

PM2.5 (fine particles):

Good

9.8/100

PM10 (coarse particles):

Good

3.0/100

NO2 (nitrogen dioxide):

Fair

32.7/100

O3 (ozone):

Medium

44.1/100

SO2 (sulfur dioxide):

Good

8.1/100

CO (carbon monoxide):

Good

0.0/100

HCHO (formaldehyde):

Good

9.9/100

PM1 (ultrafine particles):

Good

12.6/100

Pollen forecast in Dupnitsa

View pollen forecast

Frequently Asked Questions

Is air quality bad in Dupnitsa right now?

On 12 August 2026, overall air quality in Dupnitsa is fair. NO2 is the main pollutant at 35.1/100. Pollution peaks around 12:00 PM (O3: 43.6/100).

Will air quality be worse tomorrow in Dupnitsa?

On 13 August 2026, air quality conditions in Dupnitsa will be similar to today, with NO2 forecast at fair at 32.7/100. Pollution peaks around 2:00 PM (O3: 44.1/100).

When is air pollution at its worst in Dupnitsa?

The times to expect weaker air quality in Dupnitsa are during hornbeam and oak pollen peaks and spells of vehicle traffic and residential wood-burning trapped by the valley; beyond those windows, conditions across Kyustendil are typically steadier, particularly when wind or rain helps clear the air.

Are air quality levels in Dupnitsa 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.

Want to see air quality forecasts for other cities in Bulgaria?

Check air quality in other popular cities:

Data provided by Airmine — Last update: 12 August 2026 at 20:34 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.