SmogRank / World / Poland / Silesia / 2024

Most polluted cities in Silesia, Poland, 2024

6 cities in Silesia, Poland ranked by their average PM2.5 over the 366 days; 6 above the WHO annual guideline (5.0 µg/m³). Worst: Racibórz at 21.5 µg/m³, #96 of 2,052 cities in the world. Cleanest: Czechowice-Dziedzice at 17.9. A city needs measurements on 70% of the days to be ranked.

OpenAQ's archive, where our readings come from, has almost none for one of these days. Cities in the United States and Europe have it from the EPA's and the European Environment Agency's own records of the same monitors; elsewhere a city's average is over its other days. Why.

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.

← Racibórz 13% 10%0

Every city in Silesia, Poland ranked for 2024, 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.

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, 2024 · All cities in Poland, 2024 · Silesia now

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SmogRank, most polluted cities in Silesia, Poland, PM2.5, 2024, smogrank.com/pl/region/silesia/history/2024 (accessed 6 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.