SmogRank / Countries / Romania

Most polluted cities in Romania

19 measured cities, last 24 hours; 2 above the WHO 24-hour guideline. Worst: Târgu Mureş at 21.0 µg/m³, #66 in the world.

Estimated: cities without a monitor

Romania 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
Constanţa	≈ 6 µg/m³	Good
Galaţi	≈ 6 µg/m³	Good
Oradea	≈ 7 µg/m³	Good
Ploieşti	≈ 9 µg/m³	Good
Arad	≈ 12 µg/m³	Moderate
Brăila	≈ 6 µg/m³	Good
Bacău	≈ 8 µg/m³	Good
Sibiu	≈ 13 µg/m³	Moderate
Satu Mare	≈ 8 µg/m³	Good
Buzău	≈ 6 µg/m³	Good
Râmnicu Vâlcea	≈ 9 µg/m³	Good
Botoşani	≈ 11 µg/m³	Moderate
Reşiţa	≈ 10 µg/m³	Moderate
Drobeta-Turnu Severin	≈ 13 µg/m³	Moderate
Bistriţa	≈ 8 µg/m³	Good
Hunedoara	≈ 12 µg/m³	Moderate
Roman	≈ 9 µg/m³	Moderate
Bârlad	≈ 7 µg/m³	Good
Deva	≈ 10 µg/m³	Moderate
Târgovişte	≈ 9 µg/m³	Good
Focșani	≈ 7 µg/m³	Good
Tulcea	≈ 5 µg/m³	Good
Alba Iulia	≈ 10 µg/m³	Moderate
Slatina	≈ 9 µg/m³	Good
Vaslui	≈ 7 µg/m³	Good
Giurgiu	≈ 7 µg/m³	Good
Mediaş	≈ 11 µg/m³	Moderate
Sfântu Gheorghe	≈ 7 µg/m³	Good
Paşcani	≈ 10 µg/m³	Moderate
Petroşani	≈ 12 µg/m³	Moderate
Turda	≈ 10 µg/m³	Moderate
Medgidia	≈ 5 µg/m³	Good
Lugoj	≈ 11 µg/m³	Moderate
Câmpina	≈ 7 µg/m³	Good
Slobozia	≈ 7 µg/m³	Good
Tecuci	≈ 7 µg/m³	Good
Alexandria	≈ 8 µg/m³	Good
Mangalia	≈ 5 µg/m³	Good
Râmnicu Sărat	≈ 7 µg/m³	Good
Odorheiu Secuiesc	≈ 8 µg/m³	Good

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SmogRank, most polluted cities in Romania, PM2.5, last 24 hours to 2 Oct 2026, 00:00 UTC, smogrank.com/ro.

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Regions

Measured cities in each region (30 days).

Updated 2026-10-02 00:07 UTC. Values are PM2.5 in µg/m³ (fine particles), the median of each city's monitors.