Worst air pollution Leszno, today and tomorrow
Today (16 July): Air quality in Leszno is fair. O3 and PM1 are fair; AQI and NO2 are medium; PM2.5, PM10, SO2, CO, and HCHO are good. Pollution peaks around 12:00 AM (NO2: 41.6/100).
Tomorrow (17 July 2026): Air quality in Leszno is fair. PM2.5 increases to fair; O3 decreases to medium; all other pollutants stay as today. Pollution peaks around 1:00 PM (O3: 49.0/100). 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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Leszno's air quality reflects the flat Greater Poland lowland in western 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 provides reasonable wind dispersal on most days and consistent Atlantic westerlies from the German border region provide the primary background ventilation throughout the year.
Today - 16 July | Pollution peaks at 00:00
AQI:
Medium
41.6/100
PM2.5 (fine particles):
Good
17.6/100
PM10 (coarse particles):
Good
4.9/100
NO2 (nitrogen dioxide):
Medium
41.6/100
O3 (ozone):
Fair
35.2/100
SO2 (sulfur dioxide):
Good
8.7/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
4.5/100
PM1 (ultrafine particles):
Fair
22.2/100
Levels show the poorest local air quality during the day
Tomorrow - 17 July | Pollution peaks at 13:00
AQI:
Medium
49.0/100
PM2.5 (fine particles):
Fair
21.8/100
PM10 (coarse particles):
Good
6.1/100
NO2 (nitrogen dioxide):
Medium
43.5/100
O3 (ozone):
Medium
49.0/100
SO2 (sulfur dioxide):
Good
11.7/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Good
5.8/100
PM1 (ultrafine particles):
Fair
26.8/100
Pollen forecast in Leszno
View pollen forecastFrequently Asked Questions
Is air quality bad in Leszno right now?
On 16 July 2026, overall air quality in Leszno is fair. O3 is the main pollutant at 35.2/100. Pollution peaks around 12:00 AM (NO2: 41.6/100).
Will air quality be worse tomorrow in Leszno?
On 17 July 2026, air quality conditions in Leszno will be similar to today, with PM1 forecast at fair at 26.8/100. Pollution peaks around 1:00 PM (O3: 49.0/100).
When is air pollution at its worst in Leszno?
Residents in Leszno 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 local manufacturing and agri-food industry; a change of season or a spell of wind usually clears things up again.
Are air quality levels in Leszno 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