Worst air pollution Varaždin, today and tomorrow
Today (20 September): Air quality in Varaždin is moderate. AQI, PM2.5, and PM1 are moderate; PM10, NO2, and O3 are fair; SO2, CO, and HCHO are good. Pollution peaks around 8:00 AM (PM2.5: 40.2/100).
Tomorrow (21 September 2026): Air quality in Varaždin is fair. AQI improves to fair; PM2.5 decreases to fair; PM10 decreases to good; NO2 decreases to good; PM1 decreases to fair; all other pollutants stay as today. Pollution peaks around 1:00 AM (PM2.5: 26.4/100). Airmine updates local air quality forecasts four times daily.
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Varaždin owes much of its air quality variation to vehicle traffic and light industry across the plain, compounded by its position on the Drava river plain in northern Croatia. The surrounding Varaždin terrain can either help disperse or trap these emissions depending on the weather, with active, breezy conditions generally bringing the clearest air.
Today - 20 September | Pollution peaks at 08:00
AQI:
Moderate
40.2/100
PM2.5 (fine particles):
Moderate
40.2/100
PM10 (coarse particles):
Fair
25.0/100
NO2 (nitrogen dioxide):
Fair
34.4/100
O3 (ozone):
Fair
29.2/100
SO2 (sulfur dioxide):
Good
1.1/100
CO (carbon monoxide):
Good
1.0/100
HCHO (formaldehyde):
Good
12.7/100
PM1 (ultrafine particles):
Moderate
40.2/100
Levels show the poorest local air quality during the day
Tomorrow - 21 September | Pollution peaks at 01:00
AQI:
Fair
26.4/100
PM2.5 (fine particles):
Fair
26.4/100
PM10 (coarse particles):
Good
15.2/100
NO2 (nitrogen dioxide):
Good
12.6/100
O3 (ozone):
Fair
20.0/100
SO2 (sulfur dioxide):
Good
1.0/100
CO (carbon monoxide):
Good
0.8/100
HCHO (formaldehyde):
Good
13.8/100
PM1 (ultrafine particles):
Fair
25.9/100
Pollen forecast in Varaždin
View pollen forecastFrequently Asked Questions
Is air quality bad in Varaždin right now?
On 20 September 2026, overall air quality in Varaždin is moderate. AQI is the main air quality indicator at 40.2/100. Pollution peaks around 8:00 AM (PM2.5: 40.2/100).
Will air quality be worse tomorrow in Varaždin?
On 21 September 2026, air quality conditions in Varaždin will be better than today, with AQI forecast at fair at 26.4/100. Pollution peaks around 1:00 AM (PM2.5: 26.4/100).
When is air pollution at its worst in Varaždin?
The clearest dips in Varaždin's air quality track oak and olive pollen peaks and periods of vehicle traffic and light industry across the plain; the rest of the year typically brings clearer, more consistent conditions for the Varaždin area, particularly once autumn winds set in and the local terrain ventilates more easily than during calmer stretches.
Are air quality levels in Varaždin 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: 20 September 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.
Some text on this page may be generated or summarised using artificial intelligence (AI). Wherever possible, AI-generated content is enriched with Airmine's proprietary data to improve its accuracy and relevance. However, AI-generated content may still contain errors, omissions, or inaccuracies.
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