Air quality by country
Air quality in Bulgaria today
Updated
Moderate: average US AQI 53 across 4 cities Worst now: Plovdiv (63); cleanest: Varna (32).
Live US AQI, PM2.5 and ozone for cities across Bulgaria, ranked from most polluted to cleanest.
- Average US AQI
- 53 Moderate
- Most polluted now
- Plovdiv AQI 63
- Cleanest now
- Varna AQI 32
- Cities above 100
- 0 unhealthy for sensitive groups or worse
Air quality in Bulgaria today
Right now the modelled air quality in Bulgaria averages a US AQI of 53 (Moderate) across the 4 cities we track. By category: 1 Good, 3 Moderate (of 4).
That is 12 points better than the worldwide average of 65 across 3,909 cities.
Plovdiv has the worst air at 63 with PM2.5 at 21 µg/m³, while Varna is cleanest at 32. No tracked city is above 100, the level where sensitive groups are advised to cut back outdoors.
Bulgaria cities by AQI (most polluted first)
| City | Region | US AQI | Category | PM2.5 µg/m³ | Ozone µg/m³ |
|---|---|---|---|---|---|
| Plovdiv | Plovdiv | 63 | Moderate | 20.6 | 36 |
| Sofia | Sofia-Capital | 59 | Moderate | 16.7 | 43 |
| Montana | Montana | 56 | Moderate | 17.4 | 37 |
| Varna | Varna | 32 | Good | 5.3 | 64 |
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).