SmogRank / Countries / Romania / November 2025
Most polluted cities in Romania, November 2025
1 city in Romania ranked by their average PM2.5 over the 30 days. Worst: Târgu Mureş at 42.5 µg/m³, #163 of 2,173 cities in the world. A city needs measurements on 70% of the days to be ranked.
- 1Târgu Mureşlow-cost sensorsMureș County 42.5
Good0–9.0
Moderate9.1–35.4
Sensitive groups35.5–55.4
Unhealthy55.5–125.4
Very unhealthy125.5–225.4
Hazardous225.5+
All cities in the world, November 2025 · Romania now
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SmogRank, most polluted cities in Romania, PM2.5, November 2025, smogrank.com/ro/history/2025-11 (accessed 2 Oct 2026).
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