Air quality by country
Air quality in Romania today
Updated
Moderate: average US AQI 52 across 6 cities Worst now: Cluj-Napoca (62); cleanest: Constanţa (36).
Live US AQI, PM2.5 and ozone for cities across Romania, ranked from most polluted to cleanest.
- Average US AQI
- 52 Moderate
- Most polluted now
- Cluj-Napoca AQI 62
- Cleanest now
- Constanţa AQI 36
- Cities above 100
- 0 unhealthy for sensitive groups or worse
Air quality in Romania today
Right now the modelled air quality in Romania averages a US AQI of 52 (Moderate) across the 6 cities we track. By category: 2 Good, 4 Moderate (of 6).
That is 13 points better than the worldwide average of 65 across 3,909 cities.
Cluj-Napoca has the worst air at 62 with PM2.5 at 13 µg/m³, while Constanţa is cleanest at 36. No tracked city is above 100, the level where sensitive groups are advised to cut back outdoors.
Romania cities by AQI (most polluted first)
| City | Region | US AQI | Category | PM2.5 µg/m³ | Ozone µg/m³ |
|---|---|---|---|---|---|
| Cluj-Napoca | Cluj County | 62 | Moderate | 12.5 | 38 |
| Bucharest | Bucharest | 59 | Moderate | 14 | 26 |
| Roman | Neamț County | 56 | Moderate | 10.1 | 52 |
| Alexandria, Teleorman County | Teleorman County | 51 | Moderate | 9.1 | 30 |
| Iaşi | Iași County | 50 | Good | 8.9 | 56 |
| Constanţa | Constanța County | 36 | Good | 5.8 | 60 |
What the US AQI numbers mean
| US AQI | Category | What it means |
|---|---|---|
| 0-50 | Good | Air quality is satisfactory and poses little or no risk; a good time for outdoor activity. |
| 51-100 | Moderate | Acceptable for most people. Unusually sensitive people should consider shortening long or heavy exertion outdoors. |
| 101-150 | Unhealthy for Sensitive Groups | People with heart or lung disease, older adults, children and teens should cut back on prolonged or heavy exertion outdoors. |
| 151-200 | Unhealthy | Everyone should reduce prolonged or heavy exertion outdoors; sensitive groups should avoid it and keep windows closed. |
| 201-300 | Very Unhealthy | Health alert: everyone should avoid prolonged or heavy exertion outdoors, and sensitive groups should stay indoors. |
| 301-500 | Hazardous | Emergency conditions: everyone should avoid all outdoor physical activity and stay indoors with filtered air if possible. The scale tops out at 500; heavier dust or smoke is shown as 500. |
Modelled by CAMS (Copernicus) via Open-Meteo, refreshed twice a day; read hour by hour from the forecast.
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Data: Open-Meteo Air Quality API, Copernicus Atmosphere Monitoring Service (CAMS).