SmogRank / History / City race
Cities in Poland, worst air first, day by day
Each measured city's average over the 30 days to every day since January 2023, worst first. Find your own city to follow it through the race, or keep to one country.
The worst cities in Poland for PM2.5 over the 30 days to 11 Feb 2026: Żywiec 80.3 µg/m³, Gorzów Wielkopolski 56.8 µg/m³ and Kłodzko 54.0 µg/m³.
- 1ŻywiecSilesia80.3
- 2Gorzów WielkopolskiLubusz56.8
- 3KłodzkoLower Silesia54.0
- 4OtwockMazovia53.4
- 5Czechowice-DziedziceSilesia53.4
- 6KrakówLesser Poland53.1
- 7ŻaryLubusz47.8
- 8Jastrzębie ZdrójSilesia47.7
- 9TarnówLesser Poland47.3
- 10KaliszGreater Poland47.3
- 11WłocławekKujawsko-Pomorskie47.2
- 12RzeszówSubcarpathia45.9
- 13Zielona GóraLubusz43.5
- 14DębicaSubcarpathia43.1
- 15PoznańGreater Poland42.9
- 16PrzemyślSubcarpathia42.8
- 17RadomskoŁódź Voivodeship41.7
- 18LegionowoMazovia41.2
- 19ToruńKujawsko-Pomorskie41.0
- 20StarachowiceŚwiętokrzyskie40.7
+ 39 more cities, 40.1 µg/m³ and below
Not counted on this day, too few days measured: Kutno since 16 Jan 2026, Sulechów since 11 Jan 2026, Skarżysko-Kamienna since 7 Jan 2026 and Świecie since 24 Dec 2025.
Cities counted each day
A city's number is its average over the 30 days, shown only when 21 of them were measured (5 of 7 on the 7-day race), the same minimum as the 30- and 7-day boards. A city whose monitors go quiet fades out where it stood rather than sliding down, so a gap never reads as cleaner air. Some large countries are thin or missing because their monitors' licences don't allow reuse. How we rank.
Not covered: the government monitoring networks of China and Turkey, which publish only on their own websites; we are building the readers for them. Most cities there are missing from this board, not clean. Why.