Worst air pollution Gniezno, today and tomorrow
Today (16 July): Air quality in Gniezno is fair. AQI, NO2, and O3 are fair; PM2.5, PM10, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 5:00 PM (O3: 35.6/100).
Tomorrow (17 July 2026): Air quality in Gniezno is fair. AQI improves to medium; O3 decreases to medium; all other pollutants stay as today. Pollution peaks around 3:00 PM (O3: 45.2/100). 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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Gniezno's air quality reflects the flat Greater Poland lowland in central Poland, with vehicle traffic on the S5 expressway and the surrounding manufacturing and agri-food industry contributing local sources. Winter residential coal and wood burning generates seasonal PM2.5 elevation, while the flat Great Poland plain generally allows reasonable wind dispersal on most days and consistent Atlantic westerlies provide the primary ventilation throughout the year.
Today - 16 July | Pollution peaks at 17:00
AQI:
Fair
35.6/100
PM2.5 (fine particles):
Good
10.6/100
PM10 (coarse particles):
Good
3.1/100
NO2 (nitrogen dioxide):
Fair
28.3/100
O3 (ozone):
Fair
35.6/100
SO2 (sulfur dioxide):
Good
5.1/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
3.4/100
PM1 (ultrafine particles):
Good
13.2/100
Levels show the poorest local air quality during the day
Tomorrow - 17 July | Pollution peaks at 15:00
AQI:
Medium
45.2/100
PM2.5 (fine particles):
Good
10.4/100
PM10 (coarse particles):
Good
3.1/100
NO2 (nitrogen dioxide):
Fair
28.2/100
O3 (ozone):
Medium
45.2/100
SO2 (sulfur dioxide):
Good
5.4/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
4.9/100
PM1 (ultrafine particles):
Good
13.7/100
Pollen forecast in Gniezno
View pollen forecastFrequently Asked Questions
Is air quality bad in Gniezno right now?
On 16 July 2026, overall air quality in Gniezno is fair. AQI is the main air quality indicator at 35.6/100. Pollution peaks around 5:00 PM (O3: 35.6/100).
Will air quality be worse tomorrow in Gniezno?
On 17 July 2026, air quality conditions in Gniezno will be similar to today, with NO2 forecast at fair at 28.2/100. Pollution peaks around 3:00 PM (O3: 45.2/100).
When is air pollution at its worst in Gniezno?
Residents in Gniezno are most likely to notice reduced air quality when oak and birch pollen peaks, or due to vehicle traffic on the S5 expressway and the nearby manufacturing and agri-food industry; cooler, breezier weather later in the year tends to bring things back down.
Are air quality levels in Gniezno 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