SmogRank / History / City race
Cities in Spain, 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 Spain for PM2.5 over the 30 days to 15 Aug 2025: Santa Lucía 22.0 µg/m³, Ponferrada 21.3 µg/m³ and Ourense 20.5 µg/m³.
- 1Santa LucíaCanary Islands22.0
- 2PonferradaCastille and León21.3
- 3OurenseGalicia20.5
- 4FuenlabradaMadrid19.6
- 5CandelariaCanary Islands17.4
- 6ArrecifeCanary Islands16.5
- 7ManlleuCatalonia16.1
- 8SarriaGalicia15.9
- 9Mollet del VallèsCatalonia15.1
- 10ValdemoroMadrid15.0
- 11PalenciaCastille and León14.3
- 12BurgosCastille and León14.3
- 13ValenciaValencia13.7
- 14JumillaMurcia13.5
- 15ZumarragaBasque Country13.5
- 16CosladaMadrid13.5
- 17Prado del ReyAndalusia13.2
- 18LeónCastille and León13.2
- 19LorcaMurcia12.7
- 20LogroñoLa Rioja12.7
+ 80 more cities, 12.5 µg/m³ and below
Not counted on this day, too few days measured: Beasain since 11 Aug 2025, Sevilla since 9 Aug 2025, Cártama since 9 Aug 2025 and 5 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.