SmogRank / World / Poland / Mazovia / March 2025

Most polluted cities in Mazovia, Poland, March 2025

11 cities in Mazovia, Poland ranked by their average PM2.5 over the 31 days. Worst: Otwock at 38.0 µg/m³, #180 of 2,809 cities in the world. Cleanest: Płock at 22.0. 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.

← Otwock 48% 40%0
Every city in Mazovia, Poland ranked for March 2025, 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. 1Otwock
    48%
  2. 2Wawer
    32%
  3. 3Siedlce
    29%
  4. 4Żyrardów
    26%
  5. 5Legionowo
    26%
  6. 6Pruszków
    26%
  7. 7Ciechanów
    26%
  8. 8Radom
    24%
  9. 9Warsaw
    23%
  10. 10Konstancin-Jeziorna
    20%
  11. 11Płock
    13%
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, March 2025 · All cities in Poland, March 2025 · Mazovia now

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SmogRank, most polluted cities in Mazovia, Poland, PM2.5, March 2025, smogrank.com/pl/region/mazovia/history/2025-03 (accessed 6 Oct 2026).

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