SmogRank / World / Slovakia / Žilina Region / January 2025

Most unhealthy days in Žilina Region, Slovakia, January 2025

5 cities in Žilina Region, Slovakia ranked by their share of unhealthy days over the 31 days. The most unhealthy days: Ružomberok, Slovakia, 6 of 27 measured days. A city needs measurements on 70% of the days to be ranked.

Ranked by unhealthy days: the share of each city's measured days with a daily mean over 35.4 µg/m³ (US AQI 101+), Unhealthy for Sensitive Groups or worse on the US EPA's scale. Ties go to the higher average.

← Ružomberok 22% 20%0
Every city in Žilina Region, Slovakia ranked for January 2025, one column each, ranked by unhealthy days: height is the share of its measured days that were unhealthy, colour its average. Point at it to read a city; tap to open it.
  1. 1Ružomberok
    6 of 27
  2. 2Liptovský Mikuláš
    5 of 24
  3. 3Martin
    4 of 28
  4. 4Žilina
    3 of 27
  5. 5Oščadnica
    2 of 29
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

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SmogRank, most polluted cities in Žilina Region, Slovakia, by unhealthy days, PM2.5, January 2025, smogrank.com/sk/region/zilina-region/history/2025-01?by=days (accessed 7 Oct 2026).

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You're welcome to reuse a single chart, image or figure with this citation and a link. Terms. Raw monitor readings in bulk are published by OpenAQ, under each provider's licence.