SmogRank / Cleaner or dirtier / Bulgaria
Bulgaria: cleaner or dirtier, 2024
In Bulgaria, 4 cities have enough days in both years to compare 2024 with the same days of 2023: 0 got dirtier and 4 cleaner.
The 4 cities that got cleaner, biggest fall first
| # | City | 2023 | 2024 | Change |
|---|---|---|---|---|
| 1 | HaskovoBulgaria | 59 | 55 | −2.3 µg/m³−17% |
| 2 | BotevgradSofia, Bulgaria | 61 | 59 | −1.3 µg/m³−9% |
| 3 | GabrovoBulgaria | 53 | 51 | −0.9 µg/m³−9% |
| 4 | SevlievoGabrovo, Bulgaria | 54 | 53 | −0.7 µg/m³−7% |
Means in US AQI over the days a city was measured in both years, the same calendar days each year; a city needs 55% of the days paired, and at least 30. The change is in µg/m³ and per cent. How we compare.
Good0–50
Moderate51–100
Sensitive groups101–150
Unhealthy151–200
Very unhealthy201–300
Hazardous301+
The US EPA's Air Quality Index for PM2.5 (2024 breakpoints). Show values as: µg/m³ · US AQI · India AQI · China AQI · European AQI · UK DAQI · Canada AQHI+. About the scales
Updated 2026-10-07 12:07 UTC. Values are PM2.5 (fine particles), the median of each city's monitors, as the US AQI PM2.5 sub-index.