Worst air pollution Ostrołęka, today and tomorrow
Today (9 August): Air quality in Ostrołęka is poor. AQI and NO2 are poor; PM2.5 and O3 are fair; PM10, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 5:00 AM (NO2: 64.9/100).
Tomorrow (10 August 2026): Air quality in Ostrołęka is fair. AQI improves to medium; NO2 decreases to fair; O3 decreases to medium; SO2 increases to fair; PM1 increases to fair; all other pollutants stay as today. Pollution peaks around 5:00 PM (O3: 44.8/100). 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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Local air quality in Ostrołęka owes much to its position near the Narew River, where paper manufacturing on the Narew river and seasonal farm-machinery and harvest dust both leave a measurable mark on local readings. Conditions tend to be at their most challenging during the winter heating season, easing markedly by summer.
Today - 9 August | Pollution peaks at 05:00
AQI:
Poor
64.9/100
PM2.5 (fine particles):
Fair
20.0/100
PM10 (coarse particles):
Good
6.8/100
NO2 (nitrogen dioxide):
Poor
64.9/100
O3 (ozone):
Fair
29.0/100
SO2 (sulfur dioxide):
Good
14.6/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
2.4/100
PM1 (ultrafine particles):
Good
18.3/100
Levels show the poorest local air quality during the day
Tomorrow - 10 August | Pollution peaks at 17:00
AQI:
Medium
44.8/100
PM2.5 (fine particles):
Fair
20.7/100
PM10 (coarse particles):
Good
7.4/100
NO2 (nitrogen dioxide):
Fair
37.6/100
O3 (ozone):
Medium
44.8/100
SO2 (sulfur dioxide):
Fair
26.2/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
4.2/100
PM1 (ultrafine particles):
Fair
22.7/100
Pollen forecast in Ostrołęka
View pollen forecastFrequently Asked Questions
Is air quality bad in Ostrołęka right now?
On 9 August 2026, overall air quality in Ostrołęka is poor. AQI is the main air quality indicator at 64.9/100. Pollution peaks around 5:00 AM (NO2: 64.9/100).
Will air quality be worse tomorrow in Ostrołęka?
On 10 August 2026, air quality conditions in Ostrołęka will be better than today, with NO2 forecast at fair at 37.6/100. Pollution peaks around 5:00 PM (O3: 44.8/100).
When is air pollution at its worst in Ostrołęka?
In Ostrołęka, reduced air quality is most noticeable when oak and birch pollen peaks and when paper manufacturing on the Narew river adds to the mix; wind and rain both help clear the air fairly quickly here, usually within a day of a front passing through.
Are air quality levels in Ostrołęka 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: 10 August 2026 at 02:34 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.
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