SmogRank / World / Europe / Romania / Cluj County

Most polluted cities in Cluj County, Romania

1 measured city, last 24 hours; 0 above the WHO 24-hour guideline. Worst: Cluj-Napoca at 9.7 µg/m³, #421 in the world.

Cluj County: 1 measured cityHunedoara CountyMaramureş: 2 measured citiesMureș County: 1 measured citySălaj County: 1 measured citySatu Mare CountySibiu CountyArad CountyBihor CountyBistrița-Năsăud CountyAlba County#1 Cluj-Napoca: 9.7 µg/m³
Each dot is a measured city, coloured by its PM2.5; tap a dot to open the city.
  1. 1Cluj-Napoca 9.70.6×
Good0–9.0
Moderate9.1–35.4
Sensitive groups35.5–55.4
Unhealthy55.5–125.4
Very unhealthy125.5–225.4
Hazardous225.5+

PM2.5 in µg/m³, coloured by the US EPA's PM2.5 categories. Show values as: µg/m³ · US AQI · India AQI · China AQI · European AQI · UK DAQI · Canada AQHI+. About the scales

Estimated: cities without a monitor

Cluj County cities we can't measure, with model estimates for the last 7 days. Listed by population, not ranked: estimates aren't precise enough to rank. Model estimates from the Copernicus Atmosphere Monitoring Service (CAMS), adjusted to measured cities nearby where there are any. Adjusted, a single day lands within ×1.5 of what a monitor would read about two times in three; unadjusted, it can be off by half or double. Treat them as a guide, not a measurement.

City7-day estimateBand
Turda≈ 10 µg/m³Moderate
Câmpia Turzii≈ 13 µg/m³Moderate
Gherla≈ 9 µg/m³Good

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SmogRank, most polluted cities in Cluj County, Romania, PM2.5, last 24 hours to 2 Oct 2026, 06:00 UTC, smogrank.com/ro/region/cluj-county.

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Updated 2026-10-02 06:07 UTC. Values are PM2.5 (fine particles), the median of each city's monitors in µg/m³.