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 Feb 2025: Revúca 41.6 µg/m³, Šahy 41.4 µg/m³ and Čaňa 34.7 µg/m³.
- 1RevúcaBanská Bystrica Region41.6
- 2ŠahyNitra Region41.4
- 3ČaňaKošice Region34.7
- 4ŽarnovicaBanská Bystrica Region32.1
- 5LučenecBanská Bystrica Region31.0
- 6RužomberokŽilina Region30.7
- 7KrompachyKošice Region29.6
- 8PrešovPrešov Region28.2
- 9HnúšťaBanská Bystrica Region27.9
- 10KošiceKošice Region27.7
- 11MartinŽilina Region27.4
- 12OščadnicaŽilina Region27.1
- 13ČadcaŽilina Region27.1
- 14ŽilinaŽilina Region27.0
- 15PúchovTrenčín Region26.6
- 16Liptovský Mikulᚎilina Region26.1
- 17TrebišovKošice Region25.0
- 18Vranov nad TopľouPrešov Region24.5
- 19HumennéPrešov Region23.9
- 20ZvolenBanská Bystrica Region23.8
+ 22 more cities, 21.8 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.