SmogRank / History / City race
Cities in Slovenia, 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 Slovenia for PM2.5 over the 30 days to 13 Feb 2025: Celje 34.7 µg/m³, Zagorje ob Savi 32.8 µg/m³ and Kranj 32.8 µg/m³.
- 1CeljeUrban Municipality of Celje34.7
- 2Zagorje ob SaviMunicipality of Zagorje ob Savi32.8
- 3KranjUrban Municipality of Kranj32.8
- 4Murska SobotaUrban Municipality of Murska Sobota32.6
- 5Novo MestoUrban Municipality of Novo Mesto31.4
- 6PtujUrban Municipality of Ptuj30.4
- 7TrbovljeMunicipality of Trbovlje28.3
- 8LjubljanaLjubljana28.1
- 9MariborUrban Municipality of Maribor27.6
- 10Nova GoricaUrban Municipality of Nova Gorica21.8
- 11KoperUrban Municipality of Koper15.9
- 12KostelMunicipality of Kostel15.3
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.