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 13 Jan 2025: Revúca 44.7 µg/m³, Šahy 38.3 µg/m³ and Žarnovica 33.7 µg/m³.
- 1RevúcaBanská Bystrica Region44.7
- 2ŠahyNitra Region38.3
- 3ŽarnovicaBanská Bystrica Region33.7
- 4RužomberokŽilina Region28.0
- 5LučenecBanská Bystrica Region27.4
- 6KrompachyKošice Region27.1
- 7HnúšťaBanská Bystrica Region25.8
- 8ČaňaKošice Region24.5
- 9PúchovTrenčín Region23.4
- 10ŽilinaŽilina Region23.0
- 11Liptovský Mikulᚎilina Region21.6
- 12MartinŽilina Region21.2
- 13ZvolenBanská Bystrica Region20.6
- 14OščadnicaŽilina Region20.5
- 15ČadcaŽilina Region20.5
- 16PezinokBratislava Region20.3
- 17SereďTrnava Region18.3
- 18HandlováTrenčín Region18.2
- 19KošiceKošice Region18.0
- 20PrievidzaTrenčín Region18.0
+ 22 more cities, 17.6 µg/m³ and below
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.