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 21 Jun 2024: Krompachy 13.2 µg/m³, Púchov 12.4 µg/m³ and Prešov 12.0 µg/m³.
- 1KrompachyKošice Region13.2
- 2PúchovTrenčín Region12.4
- 3PrešovPrešov Region12.0
- 4KomárnoNitra Region11.9
- 5HumennéPrešov Region11.8
- 6ČaňaKošice Region11.5
- 7TrnavaTrnava Region10.7
- 8SenecBratislava Region10.6
- 9Veľká LomnicaPrešov Region10.5
- 10KošiceKošice Region10.5
- 11SereďTrnava Region10.3
- 12PezinokBratislava Region10.3
- 13ŽarnovicaBanská Bystrica Region10.1
- 14NitraNitra Region10.0
- 15TrebišovKošice Region9.8
- 16BratislavaBratislava Region9.7
- 17Vranov nad TopľouPrešov Region9.4
- 18TrenčínTrenčín Region9.4
- 19ŽilinaŽilina Region9.3
- 20LučenecBanská Bystrica Region9.3
+ 20 more cities, the next at 9.2 µg/m³
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.