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 15 Dec 2024: Revúca 38.1 µg/m³, Šahy 33.8 µg/m³ and Žarnovica 31.4 µg/m³.
- 1RevúcaBanská Bystrica Region38.1
- 2ŠahyNitra Region33.8
- 3ŽarnovicaBanská Bystrica Region31.4
- 4ČaňaKošice Region25.0
- 5HnúšťaBanská Bystrica Region21.4
- 6ZvolenBanská Bystrica Region21.0
- 7KrompachyKošice Region20.6
- 8KošiceKošice Region20.5
- 9HumennéPrešov Region20.5
- 10PrešovPrešov Region20.3
- 11TrebišovKošice Region19.3
- 12PúchovTrenčín Region18.9
- 13PezinokBratislava Region18.3
- 14Vranov nad TopľouPrešov Region18.1
- 15PrievidzaTrenčín Region16.8
- 16BardejovPrešov Region16.4
- 17NitraNitra Region16.2
- 18KolárovoNitra Region16.2
- 19Banská BystricaBanská Bystrica Region16.0
- 20Liptovský Mikulᚎilina Region15.6
+ 18 more cities, 15.4 µg/m³ and below
Not counted on this day, too few days measured: Komárno since 3 Dec 2024, Lučenec since 24 Nov 2024 and Ružomberok since 22 Nov 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 readers for them. Most cities there are missing from this board, not clean. Why.