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City in Iasi County, Romania

Air quality in Iași

Updated October 2026Sources
14.7PM2.5 µg/m³, yearly

Moderate

The annual average PM2.5 in Iași was 14.7 µg/m³ in 2024, about 2.9 times the WHO guideline of 5 µg/m³. Winter smoke and traffic can cause haze on cold, still days.

Key facts

PM2.5 by year

YearAnnual average
202414.7 µg/m³
202313.9 µg/m³
202120 µg/m³
201827 µg/m³

Air quality across Romania

PlacePM2.5Level
Sibiu10 µg/m³Fairly clean
Oradea10 µg/m³Fairly clean
Cluj-Napoca12 µg/m³Moderate
Constanța12 µg/m³Moderate
Brașov14 µg/m³Moderate
Timișoara14 µg/m³Moderate
Iași14.7 µg/m³Moderate
Bucharest15 µg/m³Moderate

Quick answers

Is the air in Iași bad?

Moderate: 14.7 µg/m³ of PM2.5 on average, 2.9× the WHO guideline. It's usually worst in Dec–Feb.

When is the air worst in Iași?

Winter smoke and traffic can cause haze on cold, still days.

How does Iași compare with the rest of Romania?

People in Romania breathe 16 µg/m³ of PM2.5 on average (2023, World Bank/WHO), against 14.7 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 Spotted something out of date?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.