SmogRank / World / Poland / Mazovia / January 2024

Most polluted cities in Mazovia, Poland, January 2024

11 cities in Mazovia, Poland ranked by their average PM2.5 over the 31 days. Worst: Pruszków at 25.0 µg/m³, #174 of 2,341 cities in the world. Cleanest: Płock at 17.0. 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.

← Pruszków 19% 15%0
Every city in Mazovia, Poland ranked for January 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.
  1. 1Pruszków
    19%
  2. 2Legionowo
    14%
  3. 3Radom
    11%
  4. 4Żyrardów
    11%
  5. 5Otwock
    7%
  6. 6Siedlce
    7%
  7. 7Warsaw
    7%
  8. 8Wawer
    7%
  9. 9Pułtusk
    7%
  10. 9Konstancin-Jeziorna
    7%
  11. 11Płock
    7%
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, January 2024 · All cities in Poland, January 2024 · Mazovia now

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SmogRank, most polluted cities in Mazovia, Poland, PM2.5, January 2024, smogrank.com/pl/region/mazovia/history/2024-01 (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.