SmogRank / History / City race
Cities in Slovakia, 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 Slovakia for PM2.5 over the 30 days to 20 Aug 2024: Komárno 15.2 µg/m³, Čaňa 14.8 µg/m³ and Sereď 13.9 µg/m³.
- 1KomárnoNitra Region15.2
- 2ČaňaKošice Region14.8
- 3SereďTrnava Region13.9
- 4PúchovTrenčín Region13.6
- 5PrešovPrešov Region13.3
- 6MartinŽilina Region12.7
- 7NitraNitra Region12.4
- 8KrompachyKošice Region12.2
- 9BratislavaBratislava Region12.0
- 10HumennéPrešov Region11.5
- 11PezinokBratislava Region11.5
- 12KošiceKošice Region11.4
- 13KolárovoNitra Region11.3
- 14ŽarnovicaBanská Bystrica Region11.2
- 15ŽilinaŽilina Region11.1
- 16TrebišovKošice Region10.9
- 17RužomberokŽilina Region10.9
- 18PrievidzaTrenčín Region10.9
- 19Liptovský Mikulᚎilina Region10.7
- 20Chorvátsky Grob - Čierna VodaBratislava Region10.7
+ 17 more cities, the next at 10.6 µg/m³
Not counted on this day, too few days measured: Žiar nad Hronom since 20 Aug 2024, Trnava since 20 Aug 2024, Senica since 20 Aug 2024 and Partizánske since 20 Aug 2024.
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 reader for China's network. Turkey's network doesn't answer requests from outside the country, so we can't read it. Most cities there are missing from this board, not clean. Why.