SmogRank / World / Europe / Poland / Silesia

Most polluted cities in Silesia, Poland

6 measured cities, last 30 days; 0 above the WHO 24-hour guideline. Worst: Katowice at 10.9 µg/m³, #554 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.

← Katowice 0% 0.75%0

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.

City	7-day estimate	Band
Częstochowa	≈ 21 µg/m³	Moderate
Sosnowiec	≈ 29 µg/m³	Moderate
Gliwice	≈ 32 µg/m³	Moderate
Zabrze	≈ 32 µg/m³	Moderate
Bytom	≈ 32 µg/m³	Moderate
Ruda Śląska	≈ 32 µg/m³	Moderate
Rybnik	≈ 48 µg/m³	Unhealthy for sensitive groups
Tychy	≈ 44 µg/m³	Unhealthy for sensitive groups
Dąbrowa Górnicza	≈ 29 µg/m³	Moderate
Chorzów	≈ 32 µg/m³	Moderate
Jaworzno	≈ 29 µg/m³	Moderate
Siemianowice Śląskie	≈ 29 µg/m³	Moderate
Mysłowice	≈ 29 µg/m³	Moderate
Żory	≈ 44 µg/m³	Unhealthy for sensitive groups
Tarnowskie Góry	≈ 32 µg/m³	Moderate
Piekary Śląskie	≈ 32 µg/m³	Moderate
Będzin	≈ 29 µg/m³	Moderate
Świętochłowice	≈ 32 µg/m³	Moderate
Zawiercie	≈ 23 µg/m³	Moderate
Knurów	≈ 32 µg/m³	Moderate
Mikołów	≈ 44 µg/m³	Unhealthy for sensitive groups
Czeladź	≈ 29 µg/m³	Moderate
Myszków	≈ 29 µg/m³	Moderate
Czerwionka-Leszczyny	≈ 44 µg/m³	Unhealthy for sensitive groups
Pszczyna	≈ 44 µg/m³	Unhealthy for sensitive groups
Lubliniec	≈ 23 µg/m³	Moderate
Łaziska Górne	≈ 44 µg/m³	Unhealthy for sensitive groups
Rydułtowy	≈ 48 µg/m³	Unhealthy for sensitive groups
Bieruń	≈ 35 µg/m³	Moderate
Pyskowice	≈ 32 µg/m³	Moderate
Orzesze	≈ 44 µg/m³	Unhealthy for sensitive groups
Radlin	≈ 48 µg/m³	Unhealthy for sensitive groups
Radzionków	≈ 32 µg/m³	Moderate
Lędziny	≈ 35 µg/m³	Moderate
Ustroń	≈ 21 µg/m³	Moderate

Bad-air episodes in Silesia

• Eastern Europe, 10 to 12 April 20263 days36 cities60 µg/m³peak, Radomsko
• Poland, Hungary and 2 more countries, April 20262 to 3 April 2026, 2 days10 cities50 µg/m³peak, Łask
• Europe, 18 to 25 March 20268 days430 cities136 µg/m³peak, Łask
• Europe, 1 to 12 March 202612 days532 cities109 µg/m³peak, Radomsko
• Europe, January and February 202612 January to 12 February 2026, 32 days625 cities252 µg/m³peak, Travnik
• Eastern Europe, January 20269 to 10 January 2026, 2 days86 cities210 µg/m³peak, Bijelo Polje

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, last 30 days to 6 Oct 2026, 22:00 UTC, smogrank.com/pl/region/silesia?w=30d.

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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.