City in Cluj County, Romania
Air quality in Cluj-Napoca
Moderate
The annual average PM2.5 in Cluj-Napoca was 12 µg/m³ in 2021, about 2.4 times the WHO guideline of 5 µg/m³. Winter inversion and heating smoke can raise PM2.5 on cold, still days.
Key facts
- PM2.5: 12 µg/m³ yearly average (2021). Measured at Cluj-Napoca.
- PM10: 22 µg/m³ (2021).
- Nitrogen dioxide: 31 µg/m³ (2021), mostly from traffic.
- Worst months: Dec–Feb.
- Recent average: 16.8 µg/m³ over the last five years of measurements.
PM2.5 by year
| Year | Annual average |
|---|---|
| 2021 | |
| 2019 | |
| 2018 | |
| 2017 | |
| 2015 |
Air quality across Romania
Quick answers
Is the air in Cluj-Napoca bad?
Moderate: 12 µg/m³ of PM2.5 on average, 2.4× the WHO guideline. It's usually worst in Dec–Feb.
When is the air worst in Cluj-Napoca?
Winter inversion and heating smoke can raise PM2.5 on cold, still days.
How does Cluj-Napoca compare with the rest of Romania?
People in Romania breathe 16 µg/m³ of PM2.5 on average (2023, World Bank/WHO), against 12 µg/m³ measured here.
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Sources
- WHO Ambient Air Quality Database
- WHO air quality guidelines (2021)
- Live air quality map (WAQI)
- Cluj-Napoca International Airport
- CFR Călători
- Bolt Romania
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 Spotted something out of date?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.