SmogRank / World / Europe / Poland / Silesia

Most polluted cities in Silesia, Poland

5 measured cities, this year; 5 above the WHO annual guideline. Worst: Żywiec at 27.7 µg/m³, #221 in the world.

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.

Lower Silesia: 4 measured citiesŁódź Voivodeship: 3 measured citiesLesser Poland: 2 measured citiesMazovia: 8 measured citiesOpole Voivodeship: 3 measured citiesSilesia: 5 measured citiesŚwiętokrzyskie: 3 measured citiesGreater Poland: 2 measured cities#5 Katowice: 15.2 µg/m³#4 Racibórz: 15.5 µg/m³#3 Czechowice-Dziedzice: 20.6 µg/m³#2 Jastrzębie Zdrój: 20.9 µg/m³#1 Żywiec: 27.7 µg/m³
Each dot is a measured city, coloured by its PM2.5; tap a dot to open the city.
← Żywiec 28% 20%0
Every measured city in Silesia, Poland, 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. 1Żywieclast full day 29 Sept 28%
  2. 2Czechowice-Dziedzicelast full day 29 Sept 20%
  3. 3Jastrzębie Zdrójlast full day 29 Sept 17%
  4. 4Racibórzlast full day 29 Sept 8%
  5. 5Katowicelast full day 29 Sept 6%
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

Estimated: cities without a monitor

Silesia cities we can't measure, with model estimates for the last 7 days. Listed by population, not ranked: estimates aren't precise enough to rank. Model estimates from the Copernicus Atmosphere Monitoring Service (CAMS), adjusted to measured cities nearby where there are any. Adjusted, a single day lands within ×1.5 of what a monitor would read about two times in three; unadjusted, it can be off by half or double. Treat them as a guide, not a measurement.

City7-day estimateBand
Częstochowa≈ 21 µg/m³Moderate
Sosnowiec≈ 29 µg/m³Moderate
Gliwice≈ 32 µg/m³Moderate
Zabrze≈ 32 µg/m³Moderate
Bytom≈ 32 µg/m³Moderate
Ruda Śląska≈ 32 µg/m³Moderate
Rybnik≈ 48 µg/m³Unhealthy for sensitive groups
Tychy≈ 44 µg/m³Unhealthy for sensitive groups
Dąbrowa Górnicza≈ 29 µg/m³Moderate
Chorzów≈ 32 µg/m³Moderate
Jaworzno≈ 29 µg/m³Moderate
Siemianowice Śląskie≈ 29 µg/m³Moderate
Mysłowice≈ 29 µg/m³Moderate
Żory≈ 44 µg/m³Unhealthy for sensitive groups
Tarnowskie Góry≈ 32 µg/m³Moderate
Piekary Śląskie≈ 32 µg/m³Moderate
Będzin≈ 29 µg/m³Moderate
Świętochłowice≈ 32 µg/m³Moderate
Zawiercie≈ 23 µg/m³Moderate
Knurów≈ 32 µg/m³Moderate
Mikołów≈ 44 µg/m³Unhealthy for sensitive groups
Czeladź≈ 29 µg/m³Moderate
Myszków≈ 29 µg/m³Moderate
Czerwionka-Leszczyny≈ 44 µg/m³Unhealthy for sensitive groups
Pszczyna≈ 44 µg/m³Unhealthy for sensitive groups
Lubliniec≈ 23 µg/m³Moderate
Łaziska Górne≈ 44 µg/m³Unhealthy for sensitive groups
Rydułtowy≈ 48 µg/m³Unhealthy for sensitive groups
Bieruń≈ 35 µg/m³Moderate
Pyskowice≈ 32 µg/m³Moderate
Orzesze≈ 44 µg/m³Unhealthy for sensitive groups
Radlin≈ 48 µg/m³Unhealthy for sensitive groups
Radzionków≈ 32 µg/m³Moderate
Lędziny≈ 35 µg/m³Moderate
Ustroń≈ 21 µg/m³Moderate

Bad-air episodes in Silesia

Times when many cities around here had PM2.5 at twice their usual or more on the same days.

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SmogRank, most polluted cities in Silesia, Poland, PM2.5, this year to 6 Oct 2026, 22:00 UTC, smogrank.com/pl/region/silesia?w=year.

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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.

Updated 2026-10-06 22:07 UTC. Values are PM2.5 (fine particles), the median of each city's monitors, as the US AQI PM2.5 sub-index.