City in Kosice Region, Slovakia
Air quality in Košice
Polluted
The annual average PM2.5 in Košice was 18 µg/m³ in 2021, about 3.6 times the WHO guideline of 5 µg/m³. Steelworks emissions and winter heating can worsen air on cold, still days; usually fine in summer.
Key facts
- PM2.5: 18 µg/m³ yearly average (2021). Measured at Kosice.
- PM10: 26 µg/m³ (2021).
- Nitrogen dioxide: 22 µg/m³ (2021), mostly from traffic.
- Worst months: Dec–Feb.
- Recent average: 17.4 µg/m³ over the last five years of measurements.
PM2.5 by year
| Year | Annual average |
|---|---|
| 2021 | |
| 2020 | |
| 2019 | |
| 2018 | |
| 2017 | |
| 2016 | |
| 2015 |
Air quality across Slovakia
| Place | PM2.5 | Level |
|---|---|---|
| High Tatras | 7.9 µg/m³ | Fairly clean |
| Bratislava | 13 µg/m³ | Moderate |
| Košice | 18 µg/m³ | Polluted |
Quick answers
Is the air in Košice bad?
Polluted: 18 µg/m³ of PM2.5 on average, 3.6× the WHO guideline. It's usually worst in Dec–Feb.
When is the air worst in Košice?
Steelworks emissions and winter heating can worsen air on cold, still days; usually fine in summer.
How does Košice compare with the rest of Slovakia?
People in Slovakia breathe 14 µg/m³ of PM2.5 on average (2023, World Bank/WHO), against 18 µg/m³ measured here.
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Sources
- WHO Ambient Air Quality Database
- WHO air quality guidelines (2021)
- Live air quality map (WAQI)
- Košice city
- Košice Airport
- University Hospital L. Pasteur
Annual averages are measured values reported to the WHO; check a live map for today's air. Compiled and reviewed by SoloSquare. How we compile and score this. Spotted something out of date? Tell us.