Air Quality Index (AQI) in Bulgaria 🇧🇬
Live Air Quality Index (AQI) and PM2.5 Levels in Bulgaria
Currently, the Air Quality Index (AQI) in Sofia, the capital of Bulgaria, is measured at a score of 39. According to the US EPA health standard, this air quality rating is categorized as Good. The current atmosphere in Sofia is influenced by a PM2.5 (fine particulate matter) concentration of 7.0 µg/m³ and PM10 levels recorded at 10.4 µg/m³. Monitoring of gaseous pollutants shows Nitrogen Dioxide (NO2) at 5.3 µg/m³.
Beyond the primary urban hubs, atmospheric conditions and smog levels fluctuate across Bulgaria based on industrial output, traffic density, and local weather patterns. Real-time pollution data and respiratory health alerts are also being actively monitored in cities like Plovdiv, Varna, Burgas, Stara Zagora and Ruse. Tracking these air quality metrics is essential for residents nationwide to manage outdoor exposure and maintain respiratory safety during periods of increased particulate concentration.
Bulgaria Air Quality: Major Cities Index
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Pollution Monitor & AQI Forecast: Bulgaria Regions
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* Air Quality Index (AQI) data for Bulgaria is calculated using the US EPA standard. Information is processed from multiple monitoring stations detecting PM2.5, PM10, and gaseous pollutants to ensure accuracy for respiratory health planning.
Frequently Asked Questions about Air Quality in Bulgaria
What is the air quality in Bulgaria right now?
The current AQI in Sofia (capital of Bulgaria) is 39 — categorised as Good. Conditions vary across the country — see AQI for all cities for a complete picture.
Which city in Bulgaria has the worst air quality right now?
Right now, Vidin has the highest AQI reading in Bulgaria at 48 (Good).
Which city in Bulgaria has the best air quality right now?
Kardzhali currently has the lowest AQI in Bulgaria at 29 (Good).
What is the PM2.5 level in Sofia today?
Is the air in Bulgaria safe to breathe today?
Most cities in Bulgaria currently report acceptable air-quality levels, though local conditions vary.
What are the cleanest cities in Bulgaria right now?
Top 5 cities in Bulgaria with the best (lowest) AQI right now:
- Kardzhali: AQI 29 — Good
- Kyustendil: AQI 30 — Good
- Asenovgrad: AQI 31 — Good
- Karlovo: AQI 31 — Good
- Dupnitsa: AQI 32 — Good
What are the most polluted cities in Bulgaria right now?
Top 5 cities in Bulgaria with the worst (highest) AQI right now:
- Vidin: AQI 48 — Good
- Pernik: AQI 46 — Good
- Dobrich: AQI 45 — Good
- Shumen: AQI 44 — Good
- Varna: AQI 41 — Good
Air Quality Scales & Resources
Wondering what these AQI numbers mean for your health? Our worldwide air quality guide explains every level of the AQI, PM2.5, PM10, ozone, NO2, CO and SO2 scales, with practical health advice for each range.
→ Understanding Air Quality Levels: read the full guide