Worst air pollution Zagreb, today and tomorrow
Today (16 July): Air quality in Zagreb is fair. AQI, O3, and HCHO are fair; PM2.5, PM10, NO2, SO2, CO, and PM1 are good. Pollution peaks around 4:00 PM (O3: 38.7/100).
Tomorrow (17 July 2026): Air quality in Zagreb is fair. AQI improves to medium; NO2 increases to fair; O3 decreases to medium; PM1 increases to fair; all other pollutants stay as today. Pollution peaks around 1:00 PM (O3: 49.4/100). 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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Zagreb's air quality faces winter challenges, with residential wood and coal burning generating elevated PM2.5 during cold periods alongside vehicle traffic on the ring road. The Sava river valley and the surrounding Medvednica massif create topographic variation in pollution exposure across the city, while the flat Pannonian plain to the east provides good dispersal on days with appreciable winds.
Today - 16 July | Pollution peaks at 16:00
AQI:
Fair
38.7/100
PM2.5 (fine particles):
Good
11.5/100
PM10 (coarse particles):
Good
3.6/100
NO2 (nitrogen dioxide):
Good
19.5/100
O3 (ozone):
Fair
38.7/100
SO2 (sulfur dioxide):
Good
0.6/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Fair
22.0/100
PM1 (ultrafine particles):
Good
15.5/100
Levels show the poorest local air quality during the day
Tomorrow - 17 July | Pollution peaks at 13:00
AQI:
Medium
49.4/100
PM2.5 (fine particles):
Good
16.5/100
PM10 (coarse particles):
Good
4.9/100
NO2 (nitrogen dioxide):
Fair
23.6/100
O3 (ozone):
Medium
49.4/100
SO2 (sulfur dioxide):
Good
0.9/100
CO (carbon monoxide):
Good
0.0/100
HCHO (formaldehyde):
Fair
24.7/100
PM1 (ultrafine particles):
Fair
21.9/100
Pollen forecast in Zagreb
View pollen forecastAir quality forecasts for neighbourhoods and landmarks in Zagreb
Sports venues in Zagreb
Frequently Asked Questions
Is air quality bad in Zagreb right now?
On 16 July 2026, overall air quality in Zagreb is fair. AQI is the main air quality indicator at 38.7/100. Pollution peaks around 4:00 PM (O3: 38.7/100).
Will air quality be worse tomorrow in Zagreb?
On 17 July 2026, air quality conditions in Zagreb will be similar to today, with HCHO forecast at fair at 24.7/100. Pollution peaks around 1:00 PM (O3: 49.4/100).
When is air pollution at its worst in Zagreb?
Zagreb residents notice reduced air quality mainly when birch pollen peaks, and during spells of residential wood and coal burning; a shift to wetter or windier weather typically brings noticeable relief.
Are air quality levels in Zagreb 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.
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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