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Town in Primorje-Gorski Kotar, Croatia

Air quality in Opatija

Updated October 2026Sources
7.6PM2.5 µg/m³, yearly

Fairly clean

The annual average PM2.5 in Opatija was 7.6 µg/m³ in 2021, about 1.5 times the WHO guideline of 5 µg/m³.

Key facts

PM2.5 by year

YearAnnual average
20217.6 µg/m³
20209.2 µg/m³
201910.6 µg/m³
201810.9 µg/m³
20179.7 µg/m³
201610.3 µg/m³
201513 µg/m³

Air quality across Croatia

PlacePM2.5Level
Poreč6 µg/m³Fairly clean
Dubrovnik7.2 µg/m³Fairly clean
Rijeka7.6 µg/m³Fairly clean
Opatija7.6 µg/m³Fairly clean
Split9.6 µg/m³Fairly clean
Trogir9.9 µg/m³Fairly clean
Brač10.5 µg/m³Moderate
Zagreb16 µg/m³Polluted

Quick answers

Is the air in Opatija bad?

Fairly clean: 7.6 µg/m³ of PM2.5 on average, 1.5× the WHO guideline.

How does Opatija compare with the rest of Croatia?

People in Croatia breathe 16 µg/m³ of PM2.5 on average (2023, World Bank/WHO), against 7.6 µg/m³ measured here.

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Sources

Annual averages are measured values reported to the WHO; check a live map for today's air. Compiled and reviewed by SoloSquare. How we compile and score this. Spotted something out of date? Tell us.