Worst air pollution Sieradz, today and tomorrow
Today (16 July): Air quality in Sieradz is poor. AQI and NO2 are poor; PM2.5, O3, and PM1 are fair; PM10, SO2, CO, and HCHO are good. Pollution peaks around 11:00 PM (NO2: 65.8/100).
Tomorrow (17 July 2026): Air quality in Sieradz is poor. O3 decreases to medium; all other pollutants stay as today. Pollution peaks around 1:00 AM (NO2: 70.3/100). 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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Sieradz sits close to the Warta River, and this shapes local air quality, with the flat Warta valley agricultural belt contributing local emissions alongside heavy goods traffic on the nearby motorway corridor. Winter months bring the most persistent challenges here, with summer generally milder.
Today - 16 July | Pollution peaks at 23:00
AQI:
Poor
65.8/100
PM2.5 (fine particles):
Fair
23.8/100
PM10 (coarse particles):
Good
6.7/100
NO2 (nitrogen dioxide):
Poor
65.8/100
O3 (ozone):
Fair
36.0/100
SO2 (sulfur dioxide):
Good
18.5/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
5.1/100
PM1 (ultrafine particles):
Fair
29.0/100
Levels show the poorest local air quality during the day
Tomorrow - 17 July | Pollution peaks at 01:00
AQI:
Poor
70.3/100
PM2.5 (fine particles):
Fair
28.4/100
PM10 (coarse particles):
Good
8.0/100
NO2 (nitrogen dioxide):
Poor
70.3/100
O3 (ozone):
Medium
46.7/100
SO2 (sulfur dioxide):
Good
18.9/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
5.5/100
PM1 (ultrafine particles):
Fair
34.4/100
Pollen forecast in Sieradz
View pollen forecastFrequently Asked Questions
Is air quality bad in Sieradz right now?
On 16 July 2026, overall air quality in Sieradz is poor. AQI is the main air quality indicator at 65.8/100. Pollution peaks around 11:00 PM (NO2: 65.8/100).
Will air quality be worse tomorrow in Sieradz?
On 17 July 2026, air quality conditions in Sieradz will be similar to today, with AQI forecast at poor at 70.3/100. Pollution peaks around 1:00 AM (NO2: 70.3/100).
When is air pollution at its worst in Sieradz?
Residents of Sieradz are quickest to notice reduced air quality when oak and linden pollen peaks alongside periods of the flat Warta valley agricultural belt; outside those periods, conditions here are generally more forgiving than in many other Polish towns of similar size.
Are air quality levels in Sieradz 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.
Want to see air quality forecasts for other cities in Poland?
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Data provided by Airmine — Last update: 16 July 2026 at 10:33 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.
For long term forecasts and maps, see the Airmine app