SmogRank / Cleaner or dirtier / Slovakia
Slovakia: cleaner or dirtier, 2025
In Slovakia, 9 cities have enough days in both years to compare 2025 with the same days of 2024: 1 got dirtier and 6 cleaner.
The one city that got dirtier
| # | City | 2024 | 2025 | Change |
|---|---|---|---|---|
| 1 | ZvolenBanská Bystrica Region, Slovakia | 61 | 61 | +0.1 µg/m³+1% |
The 6 cities that got cleaner, biggest fall first
| # | City | 2024 | 2025 | Change |
|---|---|---|---|---|
| 1 | NitraNitra Region, Slovakia | 62 | 57 | −2.5 µg/m³−17% |
| 2 | HumennéPrešov Region, Slovakia | 65 | 62 | −1.7 µg/m³−10% |
| 3 | PrievidzaTrenčín Region, Slovakia | 60 | 57 | −1.3 µg/m³−9% |
| 4 | Vranov nad TopľouPrešov Region, Slovakia | 63 | 61 | −0.7 µg/m³−5% |
| 5 | BratislavaBratislava Region, Slovakia | 59 | 58 | −0.6 µg/m³−5% |
| 6 | KošiceKošice Region, Slovakia | 65 | 64 | −0.4 µg/m³−2% |
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.