SmogRank / World / Europe / Poland / Mazovia

Most polluted cities in Mazovia, Poland

9 measured cities, last 30 days; 0 above the WHO 24-hour guideline. Worst: Otwock at 15.0 µg/m³, #349 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.

← Otwock 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

Mazovia 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
Mokotów	≈ 12 µg/m³	Moderate
Praga Południe	≈ 12 µg/m³	Moderate
Ursynów	≈ 12 µg/m³	Moderate
Wola	≈ 12 µg/m³	Moderate
Bielany	≈ 12 µg/m³	Moderate
Białołeka	≈ 12 µg/m³	Moderate
Targówek	≈ 12 µg/m³	Moderate
Bemowo	≈ 12 µg/m³	Moderate
Śródmieście	≈ 12 µg/m³	Moderate
Praga Północ	≈ 12 µg/m³	Moderate
Ochota	≈ 12 µg/m³	Moderate
Siedlce	≈ 9 µg/m³	Good
Ostrołęka	≈ 7 µg/m³	Good
Żoliborz	≈ 12 µg/m³	Moderate
Ursus	≈ 14 µg/m³	Moderate
Sochaczew	≈ 11 µg/m³	Moderate
Mińsk Mazowiecki	≈ 12 µg/m³	Moderate
Wołomin	≈ 12 µg/m³	Moderate
Piaseczno	≈ 12 µg/m³	Moderate
Włochy	≈ 14 µg/m³	Moderate
Mława	≈ 8 µg/m³	Good
Nowy Dwór Mazowiecki	≈ 12 µg/m³	Moderate
Grodzisk Mazowiecki	≈ 14 µg/m³	Moderate
Wyszków	≈ 10 µg/m³	Moderate
Ząbki	≈ 12 µg/m³	Moderate
Piastów	≈ 14 µg/m³	Moderate
Marki	≈ 12 µg/m³	Moderate
Ostrów Mazowiecka	≈ 8 µg/m³	Good
Płońsk	≈ 9 µg/m³	Moderate
Rembertów	≈ 12 µg/m³	Moderate
Wesoła	≈ 12 µg/m³	Moderate
Pionki	≈ 12 µg/m³	Moderate
Pułtusk	≈ 8 µg/m³	Good
Gostynin	≈ 12 µg/m³	Moderate
Sierpc	≈ 10 µg/m³	Moderate
Sulejówek	≈ 12 µg/m³	Moderate
Sokołów Podlaski	≈ 8 µg/m³	Good
Józefów	≈ 12 µg/m³	Moderate
Kobyłka	≈ 12 µg/m³	Moderate
Zielonka	≈ 12 µg/m³	Moderate

Bad-air episodes in Mazovia

• Eastern Europe, 10 to 12 April 20263 days36 cities60 µg/m³peak, Radomsko
• Europe, 18 to 25 March 20268 days430 cities136 µg/m³peak, Łask
• Europe, 1 to 12 March 202612 days532 cities109 µg/m³peak, Radomsko
• Germany, Poland and Czechia, February 202617 to 18 February 2026, 2 days67 cities91 µg/m³peak, Kalisz
• Europe, January and February 202612 January to 12 February 2026, 32 days625 cities252 µg/m³peak, Travnik
• Poland, January 20265 to 6 January 2026, 2 days46 cities135 µg/m³peak, Łask

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 Mazovia, Poland, PM2.5, last 30 days to 6 Oct 2026, 22:00 UTC, smogrank.com/pl/region/mazovia?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.