Air quality in Slovakia
Air quality index (AQI⁺) and PM2.5 air pollution in Slovakia • 03:54, Oct 03
Live most polluted city ranking
Real-time Slovakia most polluted city ranking
| # | Cities | AQI⁺ US | |
|---|---|---|---|
| 1 |  Zilina | 96 | |
| 2 | Nitra | 65 | |
| 3 | Ružomberok | 63 | |
| 4 | Nad Jazerom | 56 | |
| 5 | Bratislava | 55 | |
| 6 | Košice | 52 | |
| 7 | Ziar nad Hronom | 51 | |
| 8 | Petrzalka | 50 | |
| 9 | Banska Bystrica | 39 | |
| 10 | Humenne | 33 |
2025 Slovakia most polluted city
| Presov, Presov | 65 |
Live cleanest city ranking
Real-time Slovakia cleanest city ranking
| # | Cities | AQI⁺ US | |
|---|---|---|---|
| 1 | Humenne | 33 | |
| 2 | Banska Bystrica | 39 | |
| 3 | Petrzalka | 50 | |
| 4 | Ziar nad Hronom | 51 | |
| 5 | Košice | 52 | |
| 6 | Bratislava | 55 | |
| 7 | Nad Jazerom | 56 | |
| 8 | Ružomberok | 63 | |
| 9 | Nitra | 65 | |
| 10 | Zilina | 96 |
2025 Slovakia cleanest city
| Poprad, Presov | 38 |
2025 Slovakia air quality
2025 country air quality average
How polluted is Slovakia?
In 2025 in Slovakia, the annual PM2.5 concentration was 2.5 times the WHO annual PM2.5 guideline.
2025 AQI⁺ country ranking
Which country had the worst air quality in 2025?
Worldwide PM2.5 ranking
2025 Slovakia global rank in air pollution
78/143
Wildfires in Slovakia
Real-time information
Active fires
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