SmogRank / World / Poland / Silesia / February 2026

Most unhealthy days in Silesia, Poland, February 2026

5 cities in Silesia, Poland ranked by their share of unhealthy days over the 28 days. The most unhealthy days: Żywiec, Poland, 14 of 26 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.

← Żywiec 54% 50%0
Every city in Silesia, Poland ranked for February 2026, 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. 1Żywiec
    14 of 26
  2. 2Czechowice-Dziedzice
    9 of 26
  3. 3Jastrzębie Zdrój
    7 of 26
  4. 4Racibórz
    5 of 26
  5. 5Katowice
    2 of 26
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

All cities in the world, February 2026 · All cities in Poland, February 2026 · Silesia now

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SmogRank, most polluted cities in Silesia, Poland, by unhealthy days, PM2.5, February 2026, smogrank.com/pl/region/silesia/history/2026-02?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.