SmogRank / Countries / Bulgaria / August 2023

Most polluted cities in Bulgaria, August 2023

7 cities in Bulgaria ranked by their average PM2.5 over the 31 days. Worst: Ruse at 13.9 µg/m³, #130 of 1,670 cities in the world. Cleanest: Dimitrovgrad at 5.0. A city needs measurements on 70% of the days to be ranked.

  1. 1RuseRuse
    13.9
  2. 2Botevgradlow-cost sensorsSofia
    10.6
  3. 3SofiaSofia-Capital
    10.4
  4. 4Haskovolow-cost sensorsHaskovo
    9.5
  5. 5Sevlievolow-cost sensorsGabrovo
    8.7
  6. 6Gabrovolow-cost sensorsGabrovo
    7.8
  7. 7Dimitrovgradlow-cost sensorsHaskovo
    5.0
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, August 2023 · Bulgaria now

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SmogRank, most polluted cities in Bulgaria, PM2.5, August 2023, smogrank.com/bg/history/2023-08 (accessed 2 Oct 2026).

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