SmogRank / World / Poland / Świętokrzyskie / March 2026

Most unhealthy days in Świętokrzyskie, Poland, March 2026

3 cities in Świętokrzyskie, Poland ranked by their share of unhealthy days over the 31 days. The most unhealthy days: Kielce, Poland, 7 of 31 measured days. 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.

← Kielce 23% 20%0
Every city in Świętokrzyskie, Poland ranked for March 2026, 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. 1Kielce
    7 of 31
  2. 2Starachowice
    6 of 31
  3. 3Połaniec
    1 of 31
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 2026 · All cities in Poland, March 2026 · Świętokrzyskie now

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SmogRank, most polluted cities in Świętokrzyskie, Poland, by unhealthy days, PM2.5, March 2026, smogrank.com/pl/region/swietokrzyskie/history/2026-03?by=days (accessed 7 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.