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 Jun 2024: Krompachy 12.9 µg/m³, Púchov 11.8 µg/m³ and Prešov 11.6 µg/m³.
- 1KrompachyKošice Region12.9
- 2PúchovTrenčín Region11.8
- 3PrešovPrešov Region11.6
- 4HumennéPrešov Region11.5
- 5ČaňaKošice Region11.1
- 6KomárnoNitra Region11.1
- 7Veľká LomnicaPrešov Region10.2
- 8TrnavaTrnava Region10.2
- 9KošiceKošice Region9.9
- 10ŽarnovicaBanská Bystrica Region9.8
- 11SenecBratislava Region9.8
- 12TrebišovKošice Region9.7
- 13SereďTrnava Region9.6
- 14PezinokBratislava Region9.6
- 15KolárovoNitra Region9.2
- 16NitraNitra Region9.1
- 17Vranov nad TopľouPrešov Region9.0
- 18BratislavaBratislava Region9.0
- 19ŽilinaŽilina Region8.9
- 20PopradPrešov Region8.8
+ 20 more cities, 8.7 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.