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 14 Jan 2025: Revúca 45.2 µg/m³, Šahy 39.7 µg/m³ and Žarnovica 34.4 µg/m³.
- 1RevúcaBanská Bystrica Region45.2
- 2ŠahyNitra Region39.7
- 3ŽarnovicaBanská Bystrica Region34.4
- 4RužomberokŽilina Region29.1
- 5LučenecBanská Bystrica Region28.5
- 6KrompachyKošice Region27.0
- 7HnúšťaBanská Bystrica Region26.5
- 8ČaňaKošice Region24.1
- 9ŽilinaŽilina Region24.0
- 10PúchovTrenčín Region24.0
- 11Liptovský Mikulᚎilina Region22.8
- 12MartinŽilina Region22.1
- 13ZvolenBanská Bystrica Region21.2
- 14PezinokBratislava Region20.9
- 15OščadnicaŽilina Region20.6
- 16ČadcaŽilina Region20.6
- 17HandlováTrenčín Region19.4
- 18SereďTrnava Region18.9
- 19PrievidzaTrenčín Region18.4
- 20Banská BystricaBanská Bystrica Region18.0
+ 22 more cities, 17.8 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.