SmogRank / Countries / Romania / Sălaj County

Most polluted cities in Sălaj County, Romania

1 measured city, last 7 days; 0 above the WHO 24-hour guideline. Worst: Zalău at 8.0 µg/m³, #927 in the world.

Estimated: cities without a monitor

Sălaj 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.

City	7-day estimate	Band
Şimleu Silvaniei	≈ 8 µg/m³	Good

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SmogRank, most polluted cities in Sălaj County, Romania, PM2.5, last 7 days to 1 Oct 2026, 23:00 UTC, smogrank.com/ro/region/salaj-county?w=7d.

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Updated 2026-10-01 23:07 UTC. Values are PM2.5 in µg/m³ (fine particles), the median of each city's monitors.