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 18 Dec 2024: Revúca 40.4 µg/m³, Šahy 31.7 µg/m³ and Žarnovica 28.8 µg/m³.
- 1RevúcaBanská Bystrica Region40.4
- 2ŠahyNitra Region31.7
- 3ŽarnovicaBanská Bystrica Region28.8
- 4ČaňaKošice Region25.3
- 5KrompachyKošice Region22.7
- 6PrešovPrešov Region19.6
- 7ZvolenBanská Bystrica Region19.5
- 8KošiceKošice Region19.4
- 9HumennéPrešov Region19.1
- 10PúchovTrenčín Region17.7
- 11TrebišovKošice Region17.5
- 12Vranov nad TopľouPrešov Region16.6
- 13RužomberokŽilina Region16.1
- 14PezinokBratislava Region15.9
- 15PrievidzaTrenčín Region15.3
- 16BardejovPrešov Region15.2
- 17OščadnicaŽilina Region15.2
- 18ČadcaŽilina Region15.2
- 19Liptovský Mikulᚎilina Region14.8
- 20NitraNitra Region14.5
+ 15 more cities, the next at 14.3 µg/m³
Not counted on this day, too few days measured: Kolárovo since 18 Dec 2024, Veľká Lomnica since 17 Dec 2024, Hnúšťa since 17 Dec 2024 and 3 more cities.
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.